A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 4 - Capacitance and Capacitors>EXERCISE 4>Q 1

MEDIUM

12th West Bengal Board

IMPORTANT

Earn 100

The charge of a $20 μ F$ capacitor is increased from $30 μ C$ to $60 μ C$ . The capacitance of the capacitor will become

42.86% studentsanswered this correctly

Important Questions on Capacitance and Capacitors

MEDIUM

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 4 - Capacitance and Capacitors>EXERCISE 4>Q 2

The distance between the two plates of charged capacitor is increased, what will be the effect on its potential ?

EASY

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 4 - Capacitance and Capacitors>EXERCISE 4>Q 3

A solid sphere and a hollow sphere of equal diameters are raised to the same potential. Then

EASY

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 4 - Capacitance and Capacitors>EXERCISE 4>Q 4

If the earth be considered as a spherical conductor of radius

6400 km

, its capacitance is

MEDIUM

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 4 - Capacitance and Capacitors>EXERCISE 4>Q 5

A dielectric material of dielectric constant

K

replaces the air inside a parallel plate capacitor. Its capacitance

EASY

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 4 - Capacitance and Capacitors>EXERCISE 4>Q 6

The capacitance of a metallic sphere is

1 μ F,

then its radius will be

EASY

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 4 - Capacitance and Capacitors>EXERCISE 4>Q 7

If two conductors of capacitances and potentials $C_{1}, V_{1}$ and $C_{2}, V_{2}$ respectively are joined, then find the common potential

EASY

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 4 - Capacitance and Capacitors>EXERCISE 4>Q 8

Capacitance of a parallel plate capacitor becomes

\frac{4}{3}

times its original value, if a dielectric slab of thickness

t = \frac{d}{2}

is inserted between the plates

[d

is the separation between the plates]. The dielectric constant of the slab is

EASY

12th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 4 - Capacitance and Capacitors>EXERCISE 4>Q 9

Two identical metal plates are given charges

Q_{1}

and

Q_{2}

(< Q_{1})

respectively. If they are now brought close together to form a parallel plate capacitor with capacitance

C,

the potential difference between them is