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Worksheets

Chapter (9)

Total questions: 25

Worksheet time: 7mins

Name
Class
Date
1.

A capacitor consists of two _____ separated by a small distance.

a)

conductors

b)

insulators

c)

none of these

2.

A capacitor stores electrical energy in the form of _____ field.

a)

magnetic

b)

electric

c)

gravitational

3.

The ratio of charge to the potential difference of a capacitor is _______.

a)

resistance

b)

inductance

c)

capacitance

4.

A dielectric material is a/an _____.

a)

insulator

b)

conductor

c)

semiconductor

5.

The relative permittivity of vacuum is _____.

a)

zero

b)

infinite

c)

one

6.

The electric field between two conductors of a capacitor is ____ electric field.

a)

uniform

b)

non-uniform

c)

none of these

7.

The charge of a capacitor is found to be directly proportional to its _____.

a)

capacitance

b)

distance

c)

potential difference

8.

A parallel-plate capacitor consists of ______ parallel metal plates.

a)

one

b)

two

c)

three

9.

The greatest capacitance can be obtained by connecting several capacitors in _____.

a)

parallel

b)

series

c)

none of these

10.

When the capacitors are connected in series each capacitor has the same _____.

a)

voltage

b)

energy

c)

charge

11.

The dielectric constant of glass is greater than ______.

a)

water

b)

ammonia

c)

air

12.

A simple capacitor is ____ capacitor.

a)

parallel-plate

b)

cylindrical

c)

electrolyte

13.

The capacitance is ______ when higher dielectric material is placed between its conductors.

a)

decreased

b)

increased

c)

constant

14.

The unit farad is the same as _____.

a)

volt per coulomb

b)

coulomb per volt

c)

newton per meter

15.

Capacitors are connected in series to get the ____ capacitance.

a)

maximum

b)

constant

c)

minimum

16.

When Q on a capacitor is doubled, its capacitance C ______.

a)

doubles

b)

remains constant

c)

is halved

17.

If the potential difference across a capacitor is doubled, its energy stored is ______.

a)

doubled

b)

tripled

c)

4 times greater

18.

If one plate of the capacitor has a charge of +Q, then the other has a charge of _______.

a)

-Q

b)

+Q

c)

+2Q

19.

The unit of surface charge density is _____.

a)

Wm2Wm^{-2}

b)

Jm2Jm^{-2}

c)

Cm2Cm^{-2}

20.

When three 12µF capacitors are connected in series the equivalent capacitance is _____.

a)

4µF

b)

36µF

c)

3µF

21.

The charge of a capacitor is directly proportional to its ______.

a)

capacitance

b)

potential difference

c)

none of these

22.

For a vacuum  κ=1\kappa=1   and for other media ____.

a)

 κ>1\kappa>1  

b)

 κ<1\kappa<1  

c)

 κ=0\kappa=0  

23.

The energy stored in a capacitor consists of _____ parallel metal plates.

a)

W = ½ QV

b)

W= ½ QV2

c)

W= ½ Q2V

24.

1 CV-1 is expressed as 1 _____.

a)

newton(N)

b)

farad(F)

c)

joule(J)

25.

The insulating materials are called _____.

a)

dielectric materials

b)

conductors

c)

none of these