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Electric field and Capacitors

Total questions: 11

Worksheet time: 6mins

Name
Class
Date
1.
The capacitance of a parallel-plate capacitor can be increased by: 
a)
increasing the charge 
b)
decreasing the charge 
c)
increasing the plate separation
d)
decreasing the plate separation 
2.

What is the voltage across the plates of the capacitor if the capacitance is 10 µF and the Charge stored is 30 µC?

a)

0.333 V

b)

3 V

c)

300 V

3.

The capacitance of a parallel-plate capacitor is:

a)

proportional to the plate area

b)

independent of any material inserted between the plates

c)

proportional to the charge stored

d)

proportional to the potential difference of the plates

4.

The capacitance of a parallel-plate capacitor can be increased by:

a)

increasing the charge

b)

decreasing the charge

c)

increasing the plate separation

d)

decreasing the plate separation

5.

which the following is wrong about capacitors:

a)

is electronic device which store the electric charge

b)

is device composed of two conductors separated by an insulator

c)

is device composed of two insulators separated by an conductors

d)

connect the positive plate with positive of battery

6.

which of the following is symbol of capacitor ?

a)
b)
c)
d)
7.

Capacitance is measured in___________

a)

Coulombs

b)

Farads

c)

Hz

d)

Volts

8.
With respect to the capacitor, which relationship is true?
a)
C = Q/V
b)
V = C×Q
c)
Q = C/V
d)
Q = V/C
9.

The two parallel plates hold +600 µC and -600 µC of charges respectively when 20 V potential difference is applied across the plates. What is its capacitance?

a)

60µF

b)

-60µF

c)

30µF

d)

-30µF

10.
If the capacitance is 47μF, and the voltage difference across the capacitor terminals is 6V, then the energy stored in that capacitor is:
a)
846×10-6Joule
b)
7.23×10-3 Joule
c)
6.76×10-5Joule
d)
5.94×10-2Joule
11.
The insulating layer of a cacitor is called the 
a)
plate
b)
conductors
c)
dielectric
d)
terminals