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Electrical

Authored by Charles Martinez

Physics

11th Grade

NGSS covered

Electrical
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25 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

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

conductors

insulators

none of these

Answer explanation

Media Image

A capacitor consists of two conductors.See Fig.

2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Media Image

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

magnetic

electric

gravitational

Answer explanation

A capacitor consists of two conductors.There is a uniform electric field between them.So a capacitor stores electrical energy in the form of electric field.

Tags

NGSS.HS-PS3-2

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Media Image

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

resistance

inductance

capacitance

Answer explanation

C=QVC=\frac{Q}{V}

4.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Media Image

A dielectric material is a/an _____.

insulator

conductor

semiconductor

Answer explanation

A parallel-plate capacitor has an insulating material, or dielectric material.

Tags

NGSS.HS-PS2-6

5.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Media Image

The relative permittivity of vacuum is _____.

zero

infinite

one

Answer explanation


κ=1(for vaccum)\kappa=1\left(for\ vaccum\right)

κ>1 (for other media)\kappa>1\ \left(for\ other\ media\right)

Tags

NGSS.HS-PS2-5

6.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Media Image

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

uniform

non-uniform

none of these

Answer explanation

The electric field lines between two conductors are same direction and same length.So this field is uniform electric field.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image

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

capacitance

distance

potential difference

Answer explanation

C=QVC=\frac{Q}{V}
Q=CV
QVQ\propto V

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