Free Printable Fundamentals of electricity

1.

SI unit of current is _____

a)

Volt

b)

Ampere

c)

Coulomb

d)

Watt

2.

The instrument used to measure current

a)

Voltmeter

b)

Ammeter

c)

Galvanometer

d)

Watt-meter

3.

Si unit of charge is (a)

4.

Which of the following represents voltage

a)

$work\ done\times ch\arg e$

b)

$\frac{workdone}{current\times time}$

c)

$\frac{workdone\times time}{current}$

d)

$workdone\times ch\arg e\times time$

5.

SI unit of potential difference is (a)

6.

How is a voltmeter connected in the circuit to measure the potential difference between two points

(a)

7.

Calculate potential difference between two terminals of a battery if 100 Joules of work is required to transfer 20 coulomb of charge from one terminal of the battery to the other

(a)

8.

Resistance of a wire is given by

a)

$R=\frac{V}{I}$

b)

$R=IV$

c)

$R=\frac{I}{B}$

d)

$R=I^2V$

9.

Give the number of electrons constituting one coulomb of charge

a)

$1.6\times10^{-19}$

b)

$1000$

c)

$6\times10^{18}$

d)

$10^{23}$

10.

30 coulomb of charge is following through an electric wire in a time of 3 seconds. The amount of current flowing through the wire is

(a)

11.

The potential difference that causes charges to move in a circuit is ___.

a)

voltage

b)

resistance

c)

current

d)

electric discharge

12.

An example of a voltage source is a _____.

a)

voltmeter

b)

battery

c)

resistance

d)

switch

13.

Electrical resistance is low in a good conductor.

a)

true

b)

false

14.

Electric current is measured in ______.

a)

Watts

b)

Volts

c)

Amperes

15.

As the resistance in a circuit increases, the electric current __________.

a)

increases

b)

decreases

c)

stays the same

16.

Which formulas represents Ohm's law?

a)

V=IR

b)

R=IV

c)

I=RV

17.

What is the unit for resistance?

a)

Volts

b)

Amperes

c)

Ohms

18.

Electricity is the flow of _________.

a)

protons

b)

neutrons

c)

electrons

19.

The flow of electric charge in a circuit is called _______.

a)

Heat

b)

Sound

c)

Electric Current

d)

Magnetic

Fundamentals of electricity

Total questions: 19

Worksheet time: 14mins

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