CURRENT, POTENTIAL DIFFERENCE AND EMF

1.

Multiple Choice

1 min

1 pt

A straight line symbol shows the

Fuse

Diode

Connecting wire

Switch

2.

Multiple Choice

1 min

1 pt

Rate of flow of electric charge is

Electric current

Conventional current only

Electronic current only

Potential difference

3.

Multiple Choice

1 min

1 pt

Instrument which transfers energy to electric charge in a circuit is

Battery

Voltmeter

Ammeter

Galvanometer

4.

Multiple Choice

1 min

1 pt

If a current of 1A passes through a point in 1s then the charge passes that point is

2C

3C

1C

6C

5.

Multiple Choice

1 min

1 pt

Energy transfer per unit charge is

E.M.F

Current

Potential difference

Conventional current

6.

Multiple Choice

1 min

1 pt

Current in a circuit when a charge of 180C passes a point in a circuit in 2 minutes.

1.00 AM

2.00 A

3.00 A

1.5 A

7.

Multiple Choice

1 min

1 pt

Identify the conductor below

Cloth rag

Gold ring

Plastic bottle

Rubber eraser

8.

Multiple Choice

1 min

1 pt

Identify the insulator below

Aluminium foil

Rubber eraser

Paper clip

Gold ring

9.

Multiple Choice

1 min

1 pt

Current in a circuit depends on

Resistance

Potential difference

Both A and B

E.M.F

10.

Multiple Choice

1 min

1 pt

If the direction of current is from positive to negative, then it is called

Electronic current

Convectional current only

Positronic current

Protonic current

11.

Multiple Choice

1 min

1 pt

A voltmeter arranged across the power supply measures

Potential difference

E.M.F

Current

Resistance

12.

Multiple Choice

1 min

1 pt

EMF is an abbreviation of

Electromotive force

Electric motive force

Electrical motive force

Both a and b

13.

Multiple Choice

1 min

1 pt

Electromotive force of a battery can be defined with the formula of

E = IR

E = IR + I

E = IR + r

E = IR + Ir

14.

Multiple Choice

1 min

1 pt

Potential difference of a battery is 2.2 V when it is connected across a resistance of 5 ohms, if suddenly the potential difference falls the 1.8 V, its internal resistance will be

1 ohms

1.1 ohms

2.0 ohms

2.1 ohms

15.

Multiple Choice

1 min

1 pt

Thicker wire have ..........resistance than thinner wire.

more

less

the same

16.

Multiple Choice

1 min

1 pt

As the resistance in the circuit increases, the electric current

increases

decreases

stay the same

17.

Multiple Choice

1 min

1 pt

Good conductor are...... resistor

bad

good

18.

Multiple Choice

1 min

1 pt

Good insulator are ....... resistor.

bad

good

19.

Multiple Choice

1 min

1 pt

What characteristic impact resistance of material.

Thickness

Temperature

Length

All of the above

20.

Multiple Choice

1 min

1 pt

If the current increases, it could be because of...

Increase voltage

Decreasing resistance

Both

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