Free Printable Capacitors

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 uF and the Charge stored is 30 uC?

a)

0.333 V

b)

3 V

c)

300 V

3.

------------------------ is created out of two metal plates and an insulating material called a dielectric.

a)

An inductor

b)

A capacitor

c)

A fixed resistor

d)

A variable resistor

4.

In the capacitor, the dielectric can be made out of all sorts of ---------- materials and the plates are made of a -------------- material.

a)

conductive, insulating

b)

conductive, conductive

c)

insulating, conductive

d)

insulating, insulating

5.

With respect to the capacitor, which relationship is true? •

a)

C = Q×V

b)

V = C×Q

c)

V = Q/C

d)

Q = C/V

6.

How is the capacitance (C) of a parallel-plate capacitor affected by the charge on the plates ?

a)

C depend on the charge on the plates

b)

C is vanished when there are plates

c)

C does not depend on the charge on the plates

d)

C is accumulated on one side only

7.

How is the capacitance of a parallel-plate capacitor affected by the potential difference across the capacitor ?

a)

C depend on the potential difference across the capacitor

b)

C does not depend on the potential difference across the capacitor

c)

C partially depend on the potential difference across the capacitor

d)

C sometime depend on the potential difference across the capacitor

8.

How is the capacitance of a parallel-plate capacitor affected by the area of each plate?

a)

C is directly proportional to the area A of each plate

b)

C is inversely proportional to the area A of each plate

c)

C is partially proportional to the area A of each plate

d)

C is fully proportional to the area A of each plate

9.

How is the capacitance of a parallel-plate capacitor affected by the distance between the plates ?

a)

C is directly proportional to the area A of each plate

b)

C is inversely proportional to the distance d between the plates

c)

C is partially proportional to the area A of each plate

d)

C is not affected by the area A of each plate

10.

If C is the capacitance in Farads, ϵ permittivity of the dielectric, A area of plate overlap in square meters and d distance between plates in meters, then:

a)

C = ϵd/A

b)

C = A/ϵd

c)

C = ϵA/d

d)

C = d/ϵA

11.

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

12.

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

a)

0.333 V

b)

3 V

c)

300 V

13.

The plates of a parallel-plate capacitor are 2.50mm apart, and each carries a charge of magnitude 80.0nC. The plates are in vacuum. The electric field between the plates has a magnitude of 4.00x10⁶V/m. What is the potential difference between the plates?

a)

2.00x10⁴V

b)

1.75x10^{4 P.D.}

c)

1.00x10^-4P

d)

1.00x10⁴V

e)

not solvable! because capacitor has no potential difference because it should have an insulator in between.

14.

from question 16:

The plates of a parallel-plate capacitor are 2.50mm apart, and each carries a charge of magnitude 80.0nC. The plates are in vacuum. The electric field between the plates has a magnitude of 4.00x10⁶V/m.

What is the area of each plates?

a)

2.26x10^-3cm²

b)

2.26x10^-3m²

c)

22.6m²

d)

2.26cm²

e)

none of the above

15.

The plates of a parallel-plate capacitor are 2.50mm apart, and each carries a charge of magnitude 80.0nC. The plates are in vacuum. The electric field between the plates has a magnitude of 4.00x10⁶V/m.

what is the capacitance?

a)

zero

b)

same as potential difference 4.00pF

c)

8.99pF

d)

8pF

e)

8.00x10^-9F

Capacitors

Total questions: 15

Worksheet time: 13mins

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