| 1 |
Static electricity is produced by the transfer
of:
|
A. Electrons
B. Protons
C. One fluid
D. Two fluids
|
| 2 |
A field free region is found:
|
A. Near the outer surface of a hollow charged metal sphere
B. In the interior of solid metal uncharged sphere
C. In the interior of solid metal charged sphere
D. Both (A) and (B)
|
| 3 |
The electric flux through any surface depends
upon:
|
A. Intensity of electric field
B. Area of the surface
C. Angle between intensity and area
D. All of these
|
| 4 |
Certain charge +q is placed at the center of a
sphere. At each of the sphere,The directions of electric intensity and vector area
are:
|
A. Same
B. Different
C. Opposite to each other
D. At 60º with each other
|
| 5 |
An inkjet printer uses in its operation:
|
A. Neutrons only
B. Mesons only
C. Positrons and photons
D. An electric charge
|
| 6 |
As the current flow through the wire:
|
A. It
generates heat in the wire
B. It produces sound in
the wire
C. Resistance of the wire
decreases
D. Voltage across the ends
is increased
|
| 7 |
The value of resistivity is the least for:
|
A. Copper
B. Aluminimum
C.Silver
D. Tungsten
|
| 8 |
The device which can
convert heat energy into electrical energy is called:
|
A. Thermistor
B. Thermometer
C. Thermostat
D. Thermocouple
|
| 9 |
A thermistor is a resistor which is:
|
A. Light Sensitive
B. Heat Sensitive
C.Sound Sensitive
D. All of these
|
| 10 |
The free electrons in metals:
|
A. Are
in random motion and their speed depends upon temperature
B. Move in particular
direction
C. Move with speed of
light
D. Move such that their
speed does not depend on their temperature
|
| 11 |
The passage of current is accompanied by a
magnetic field in the surrounding space:
|
A. Always
accompanied
B. Sometimes accompanied
C. Never accompanied
D. Any of above
|
| 12 |
When two spherical
conducting balls at different potentials are joined by a metallic wire, after
some time:
|
A. Both the conductors are
at the same potential
B. Potential difference
across the conductors remain constant
C. Potential difference
across the conductors becomes zero
D. Both (A) and (B)
|
| 13 |
The inkjet printer ejects a thin stream of:
|
A. Water
B. Oil
C. Ink
D. Any of above
|
| 14 |
Conversion of chemical
energy to electrical energy can be achieved by:
|
A. Primary cell
B. Secondary cell
C. Both
(A) and (B)
D. Photovoltaic cell
|
| 15 |
An electric field is generated along the wire
when:
|
A. Its resistance is very
high
B. A constant potential is
maintained across the wire
C. Net current through the
wire is zero
D. A
constant potential difference is maintained across the wire
|
| 16 |
When a constant potential difference is applied
across the conductor, the drift velocity of electrons:
|
A. Increases
B. Decreases
C. Remains
the constant
D. Either of these
|
| 17 |
A current of 1 ampere is passing through a conductor. The charge passing through it in half a minute s
|
A. One coulomb
B. 0.5 coulomb
C.30 coulombs
D. 2 coulombs
|
| 18 |
The value of relative permittivity of different dielectrics are:
|
A. Equal
B. Different
C. Greater than one
D. Smaller than one
|
| 19 |
Selenium is:
|
A. An insulator
B. A conductor
C. Insulator in the dark and becomes conductor when
exposed to light
D. Conductor in the dark only
|
| 20 |
The current that
flows through the coil of a motor causes:
|
A. Its shaft to revolve
B. Its brushes to rotate
C. Motor to move
D. Its
shafts to rotate
|
| 21 |
The example/s of
non-electrical energy to electrical is/are:
|
A. Chemical energy
B. Mechanical energy
C. Heat energy
D. Both (A) and (B)
|
| 22 |
When two spherical
conducting balls at different potentials are joined by a metallic wire, after
some time:
|
A. Both the conductors are
at the same potential
B. Potential difference
across the conductors remain constant
C. Potential difference
across the conductors becomes zero
D. Both (A) and (B)
|
| 23 |
The current of 1 ampere
is passing through a conductor. The charge passing through it in half a minute
is:
|
A. One coulomb
B. 0.5 coulomb
C. 30 coulomb
D. 2 coulombs
|
| 24 |
An important part of photocopier is:
|
A. Toner cartridge
B. Deflection plates
C. Charging electrode
D. Print head
|
| 25 |
In case of metallic
conductors, the change carries are:
|
A. Protons
B. Electrons
C. Antiprotons
D. Positrons
|
| 26 |
In order to have a
constant current through wire, the potential difference across its end should:
|
A. Be zero
B. Be
maintained constant
C. Goes on increasing
D. Go on decreasing
|
| 27 |
In a metal, the valence electrons are:
|
A. Attach to individual
atoms
B. Not attached to
individual atoms
C. Free to move within the
metal
D. Both (A) and (C)
|
| 28 |
The charge carriers in an electrolyte are
|
A. Positive ions
B. Negative ions
C.Either A or B
D. Both A and B
|
| 29 |
Xerography means:
|
A. Dry writing
B. Wet writing
C. Poor writing
D. Excellent writing
|
| 30 |
Two dissimilar metals
joined at their ends kept at constant temperature constitute:
|
A. Cell
B. Voltmeter
C. Thermocouple
D. Potentiometer
|