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ECAT Pre General Science Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | magnetic field is a: | <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Vector quantity<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Scalar quantity<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Scalar as well as scalar quantity<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Any of (A) or (B)<o:p></o:p></span></p> Neither (A) nor (B) |
| 2 | The pointer of a
magnetic compass: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Is affected only by permanent magnets<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Align itself parallel to the applied magnetic field<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Vibrates in the magnetic field of the current<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Aligns itself perpendicular to the magnetic field<o:p></o:p></span></p> Both (C) and (D) |
| 3 | It is customary represent a current flowing towards the reader by a symbol | (x) (+) (.) (-) (<span style="font-family: "Times New Roman", serif; font-size: 12pt; text-align: justify;">÷)</span><p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif""><o:p></o:p></span></p> |
| 4 | A current carrying conductor sets up its own: | <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Electric field<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Nuclear field<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Magnetic field<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Both (A) and (C)<b><o:p></o:p></b></span></p> All of these |
| 5 | In the region surrounding a current carrying wire: | <span style="font-family: "Times New Roman", serif; font-size: 12pt; text-align: justify;">A magnetic field is setup</span><p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif""><o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">The lines of force are elliptical<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Direction of lines of forces depends upon direction of current<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Both (A) and (C)<b><o:p></o:p></b></span></p> All of these |
| 6 | When some compass needles are placed on a card board along a circle with the center at the wire, they will | <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Point the direction of N-S<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Set themselves tangential to the circle<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Point in the direction of E-W<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">None of these<o:p></o:p></span></p> Point in direction of S-E |
| 7 | Electrolysis is the study of conduction of electricity through: | Solids Liquids Gases Plasma |
| 8 | Two dissimilar metals
joined at their ends kept at constant temperature constitute: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Cell<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Voltmeter<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Thermocouple<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Potentiometer<o:p></o:p></span></p> None of these |
| 9 | The magnitude of
chemical Effects depends upon: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Nature of liquid<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Quantity of Electricity passed through the liquid<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Color of the liquid<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Both (A) and (C)<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Both (A) and (B)<b><o:p></o:p></b></span></p> |
| 10 | Magnetic effect of current is used: | <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">In electric motor<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">To detect current<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">To measure current<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">All of these<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 11 | The strength of magnetic field at certain points around a wire depends upon: | <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Value of current passing<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Distance from the current element<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Color of the material<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Both (A) and (B)<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Both (B) and (C)<o:p></o:p></span></p> |
| 12 | The passage of current is accompanied by a magnetic field in the surrounding space: | <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Always accompanied<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Sometimes accompanied<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Never accompanied<o:p></o:p></span></p> <span style="font-family: "Times New Roman", serif; font-size: 12pt; text-align: justify;">Any of above</span><p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif""><o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 13 | The passage of current is accompanied by a magnetic field in the surrounding space: | <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Always accompanied<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Sometimes accompanied<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Never accompanied<o:p></o:p></span></p> <span style="font-family: "Times New Roman", serif; font-size: 12pt; text-align: justify;">Any of above</span><p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif""><o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 14 | Heating effect of
current utilized in: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Electric motor<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Electric toaster<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Electroplating<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Electric kettle<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Both (B) and (D)<b><o:p></o:p></b></span></p> |
| 15 | As the current flow through the wire: | <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">It generates heat in the wire<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">It produces sound in the wire<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Resistance of the wire decreases<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Voltage across the ends is increased<o:p></o:p></span></p> None of these |
| 16 | The obvious effect/s of
current is/are: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Heating effect<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Magnetic effect<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Chemical effect<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Both (C) and (B)<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><b><span style="font-size:12.0pt;line-height:107%;font-family:"Times New Roman","serif"">All of these</span></b></p> |
| 17 | When two spherical
conducting balls at different potentials are joined by metallic wire, the
current starts: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Decreasing from zero to maximum<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Increasing from zero to maximum<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Decreasing from maximum to zero<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Increasing from maximum to zero<o:p></o:p></span></p> <span style="font-family: "Times New Roman", serif; font-size: 12pt; text-align: justify;">Both (A) and (D)</span><p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif""><o:p></o:p></span></p> |
| 18 | The device which can
convert heat energy into electrical energy is called: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Thermistor<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Thermometer<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Thermostat<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Thermocouple<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Both (C) and (D)<o:p></o:p></span></p> |
| 19 | Conversion of chemical
energy to electrical energy can be achieved by: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Primary cell<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Secondary cell<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Both (A) and (B)<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Photovoltaic cell<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Solar cell<o:p></o:p></span></p> |
| 20 | The example/s of
non-electrical energy to electrical is/are: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Chemical energy<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Mechanical energy<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Heat energy<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Both (A) and (B)<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">All of these<b><o:p></o:p></b></span></p> |
| 21 | When two spherical
conducting balls at different potentials are joined by a metallic wire, after
some time: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Both the conductors are at the same potential<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Potential difference across the conductors remain constant<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Potential difference across the conductors becomes zero<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Both (A) and (B)<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Both (A) and (C)<b><o:p></o:p></b></span></p> |
| 22 | When two spherical
conducting balls at different potentials are joined by a metallic wire, after
some time: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Both the conductors are at the same potential<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Potential difference across the conductors remain constant<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Potential difference across the conductors becomes zero<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Both (A) and (B)<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Both (A) and (C)<b><o:p></o:p></b></span></p> |
| 23 | In order to have a
constant current through wire, the potential difference across its end should: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Be zero<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Be maintained constant<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Goes on increasing<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Go on decreasing<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Both (A) and (B)<o:p></o:p></span></p> |
| 24 | An electric field is generated along the wire when: | <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Its resistance is very high<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">A constant potential is maintained across the wire<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Net current through the wire is zero<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">A constant potential difference is maintained across the wire<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Either (A) or (D)<o:p></o:p></span></p> |
| 25 | The effects of bends in
a wire on its electrical resistance are: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Zero<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Much larger<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Larger<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Smaller<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 26 | When resistance of a current carrying wire increases due to rise in temperature, the drift velocity of electrons: | <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Decreases<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Increases<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Remains the constant<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Either of these<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 27 | When a constant potential difference is applied across the conductor, the drift velocity of electrons: | <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Increases<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Decreases<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Remains the constant<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Either of these<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 28 | When a constant potential difference is applied across the conductor, the drift velocity of electrons: | <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Increases<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Decreases<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Remains the constant<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Either of these<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 29 | The term drift velocity is used when the ends of a wire are: | <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Connected to a laser source<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Connected to a voltage source<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Not connected to a voltage source<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">At different values of potential<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Both (B) and (D)<b><o:p></o:p></b></span></p> |
| 30 | If the ends of a wire are connected to a battery an electric field E will be set up at: | <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">The ends of the wire only<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Mid points of the wire only<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Every point within the wire<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">At nodes only<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Both (B) and (D)<o:p></o:p></span></p> |
