| 1 |
The flux through a closed surface depends upon:
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A. Shape of geometry of the closed surface
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| 2 |
The conventional current is the name given to
current due to flow of:
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A. Positrons
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| 3 |
Electrostatics is the branch of physics which
deals with the study of electro charges:
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B. At rest under the action of electric forces
C. In motion under the action of electric forces
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| 4 |
An important part of photocopier is:
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| 5 |
Magnetic effect of current is used:
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| 6 |
The term drift velocity is used when the ends of
a wire are:
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A. Connected to a laser
source
B. Connected to a voltage
source
C. Not connected to a
voltage source
D. At different values of
potential
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| 7 |
Which instrument is expensive and difficult to use?
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A. Voltmeter
B. Potentiometer
C. CRO
D. Both A and C
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| 8 |
An inkjet printer uses in its operation:
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| 9 |
In case of two identical charges placed certain
distance apart, the electric field lines are:
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| 10 |
Flux through a closed surface of any shape and flux
through the surface of a sphere drawn around a charge are:
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C. Such that it is greater in the first case
D. Such that it is greater in the second case
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| 11 |
When two spherical
conducting balls at different potentials are joined by a metallic wire, after
some time:
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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
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| 12 |
The fourth band is a:
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A. Silver band
B. Red band
C. Gold band
D. Either A or C
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| 13 |
The earth’s potential and potential at infinity
are taken:
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C. First is greater than the second
D. Second is greater than the first
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| 14 |
The value of resistivity is the least for:
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A. Copper
B. Aluminimum
C. Silver
D. Tungsten
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| 15 |
In a metal, the valence electrons are:
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A. Attached to individual atoms
B. Not attached to individual atoms
C. Free to move within the metal
D. Both A and B
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| 16 |
The surface destiny of charge is defined is:
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| 17 |
A field free region is found:
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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
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| 18 |
Conversion of chemical
energy to electrical energy can be achieved by:
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| 19 |
In case of metallic conductors, the charge carriers are
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A. Protons
B. Electrons
C. Antiprotons
D. Positrons
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| 20 |
In case of metallic
conductors, the change carries are:
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| 21 |
The rate at which the
free electrons pass through any section of a metallic wire from right to left
is:
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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
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| 22 |
The electric flux through any surface depends
upon:
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A. Intensity of electric field
C. Angle between intensity and area
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| 23 |
An eV is unit of:
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| 24 |
The charge carriers in an electrolyte are
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A. Positive ions
B. Negative ions
C. Either A or B
D. Both A and B
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| 25 |
Tick the correct statement:
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A. Both the potential and potential difference is scalars
B. Potential is a scalar but potential difference is a vector
D. Potential is vector but potential difference is scalar
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| 26 |
Kirchhoff's first rule is also called:
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A. Loop rule
B. Thumb rule
C. Point rule
D. Right hand rule
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| 27 |
In case of metallic conductors, the charge carriers are
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A. Protons
B. Electrons
C. Antiprotons
D. Positrons
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| 28 |
An electric field is generated along the wire
when:
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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
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| 29 |
When certain area A is held parallel to the
field lines, then:
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A. No lines cross this area
B. Maximum lines pass through this area
C. The number of lines are between zero and maximum
D. Both (A) and (B) correct
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| 30 |
A current of 1 ampere is passing through a conductor. The charge passing through it in half a minute s
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A. One coulomb
B. 0.5 coulomb
C. 30 coulombs
D. 2 coulombs
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