# Electrostatic Potential And Capacitance

## In a charged capacitor the energy is stored in:

A
both in positive and negative charges
B
positive charges
C
the edges of the capacitor plates
D
the electric field between the plates
Easy
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## When air is replaced by a dielectric medium of constant , the capacity of the condenser:

A
increases times
B
increases times
C
remains unchanged
D
decreases times
Easy
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## Space between the plates of a parallel plate capacitor is filled with a dielectric slab. The capacitor is charged and then the supply is disconnected to it. If the slab is now taken out , then:

A
work is not done to take out the slab
B
energy stored in the capacitor reduces
C
potential difference across the capacitor is decreased
D
potential difference across the capacitor is increased
Easy
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## If a unit charge is taken from one point to another over an equipotential surface, then

A
work is done on the charge
B
work is done by the charge
C
work on the charge is constant
D
no work is done
Easy
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## An equipotential line and a line of force are:

A
perpendicular to each other
B
parallel to each other
C
in any direction
D
at an angle of
Easy
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