| 1 |
Another mean of electric potential energy per
unit charge is given by:
|
A. Electric intensity
B. Potential gradient
C. Electric Flux
D. Potential difference
|
| 2 |
Which instrument is expensive and difficult to use?
|
A. Voltmeter
B. Potentiometer
C.CRO
D. Both A and C
|
| 3 |
The surface destiny of charge is defined is:
|
A. Charge per volume
B. Mass per volume
C. Charge per area
D. Mass per area
|
| 4 |
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
|
| 5 |
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
|
| 6 |
The interior of a hollow charged metal sphere is
a region which:
|
A. Contain some magnitude of electric field
B. Is full of electric field lines
C. Is field-free region
D. Either (A) or (B)
|
| 7 |
In case of metallic conductors, the charge carriers are
|
A. Protons
B. Electrons
C.Antiprotons
D. Positrons
|
| 8 |
In gases, the charge carries are:
|
A. Electrons
B. Positive ions
C. Negative ions
D. Both (A) and (C)
|
| 9 |
An important part of photocopier is:
|
A. Toner cartridge
B. Deflection plates
C. Charging electrode
D. Print head
|
| 10 |
The charge carriers in an electrolyte are
|
A. Positive ions
B. Negative ions
C.Either A or B
D. Both A and B
|
| 11 |
Aluminum is a:
|
A. Good insulator
B. Bad conductor
C. Both (A) and (B)
D. Excellent conductor
|
| 12 |
Electric flux is:
|
A. Cross product of two vector
B. Dot product of two vectors
C. A vector quantity
D. A scalar quantity
|
| 13 |
Gaussian surface is always:
|
A. Rectangular
B. Spherical
C. Cylindrical
D. Box shape
|
| 14 |
Magnetic effect of current is used:
|
A. In electric motor
B. To detect current
C. To measure current
D. All
of these
|
| 15 |
In case of metallic conductors, the charge carriers are
|
A. Protons
B. Electrons
C.Antiprotons
D. Positrons
|
| 16 |
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
|
| 17 |
The rate at which the
free electrons pass through any section of a metallic wire from right to left
is:
|
A. Greater than the speed
at which they pass from left to right
B. Less than the speed at
which they pass from left to right
C. The
same speed at which they pass from left to right
D. Any of above
|
| 18 |
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
|
| 19 |
Field lines are closer to each other in the
region where the field is:
|
A. Stronger
B. Weaker
C. Much weaker
D. Absent
|
| 20 |
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
|
| 21 |
In case of metallic
conductors, the change carries are:
|
A. Protons
B. Electrons
C. Antiprotons
D. Positrons
|
| 22 |
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
|
| 23 |
The third band of the colour code:
|
A. Gives the number of zeroes
B. Is decimal multiplier
C.Gives the resistance tolerance
D. Gives the third digit
|
| 24 |
The rate at which the
free electrons pass through any section of a metallic wire from right to left
is:
|
A. Greater than the speed
at which they pass from left to right
B. Less than the speed at
which they pass from left to right
C. The
same speed at which they pass from left to right
D. Any of above
|
| 25 |
The effects of bends in
a wire on its electrical resistance are:
|
A. Zero
B. Much larger
C. Larger
D. Smaller
|
| 26 |
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)
|
| 27 |
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 shaft to rotate
|
| 28 |
Most practical application of electricity
involve
|
A. Charges at the rest
B. Charges
in the motion
C. Electrons at rest
D. Atoms in motion
|
| 29 |
Electrostatics is the branch of physics which
deals with the study of electro charges:
|
A. At rest
B. At rest under the action of electric forces
C. In motion under the action of electric forces
D. In motion
|
| 30 |
An eV is unit of:
|
A. Potential
B. Energy
C. Work
D. Power
|