Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 36

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There are two identical capacitors, the first one is uncharged and filled with a dielectric constant $K$ while the other one is charged to potential $V$ having air between its plates. If two capacitors are joined end to end, the common potential will be

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Important Questions on Electrostatic Potential and Capacitance

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 37

If initial charge on all the capacitors were zero, work done by the battery in the circuit shown is

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 39

Which of the following is not true?

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 40

How many

1 μF

capacitors must be connected in parallel to store a charge of

1 C

with a potential of

110 V

across the capacitors ?

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 41

A hollow metal sphere of radius

10 cm

is charged such that the potential on its surface becomes

80 V

. The potential at the centre of the sphere is

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 42

Charge

q_{2}

is at the centre of a circular path with radius

r .

Work done in carrying charge

q_{1}

once around this equipotential path, would be

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 43

An electric dipole of dipole moment

p

is placed in the position of stable equilibrium in uniform electric field of intensity

E .

This is rotated through an angle

θ

from the initial position. The potential energy of the electric dipole in the final position is

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 45

Two metallic spheres of radii

1 cm

and

2 cm

are given charges

10^{- 2} C

and

5 \times 10^{- 2} C

, respectively. If they are connected by a connecting wire, the final charge on the smaller sphere is

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 46

The energy stored in a capacitor of capacity

C

and potential

V

is given by