Which of the following is correct?

(a)

Rate of change of charge is electrical power

(b)

Rate of change of charge is current.

(c)

Rate of change of energy is current.

(d)

Rate of change of current is charge.

In a simple circuit, why does the bulb glow when you close the switch?

(a)

The switch produces electricity

(b)

Closing the switch completes the circuit.

(c)

Closing the switch breaks the circuit.

(d)

The bulb is getting charged.

When will be the current flow in a circuit?

(a)

A switch is closed

(b)

A switch is opened

(c)

Switch is either open or closed

(d)

None of the above

The S1 unit of power is

(a)

joule

(b)

ampere

(c)

Watt

(d)

ohm

According to Ohm's law if voltage increase and resistance stays the same

(a)

Resistance decreases

(b)

Current increases

(c)

Current remains the same

(d)

Current decreases

The amount of work done in joules when one unit electric charges moves from one point to another point in an electric circuit is called.

(a)

Resistance

(b)

Potential difference

(c)

Current

(d)

charge

The relation between potential difference (V) and current (I) was discovered by:

(a)

Volt

(b)

Ohm

(c)

Newton

(d)

Ampere

If resistance decreases, then current will

(a)

increase

(b)

double

(c)

decrease

(d)

constant

If there are two bulbs i.e. 150W bulb and 60W bulb so which has more resistance?

(a)

 60 W

(b)

150 W

(c)

Both a and b

(d)

None of the above

All good conductors have high

(a)

Resistance

(b)

Specific resistance

(c)

Voltage

(d)

None of the above

Conductivity is the ________ of resistivity.

(a)

opposite

(b)

reciprocal

(c)

equal

(d)

none of the above

How many terminals an electric bulb consist of?

(a)

2

(b)

4

(c)

3

(d)

1

Electric iron box and electric heater works on the principle of

(a)

heating effect of current

(b)

heating effect of voltage

(c)

heating effect of power

(d)

heating effect of emf

The number of electrons in one coulomb of charge is

(a)

1.6 x 10¹⁹

(b)

6.25 x 10¹⁸

(c)

1.13 x 10¹¹

(d)

8.85 x 10¹²

In the following arrangement, the bulb will not glow of the ends A & B are connected with

(a)

steel spoon

(b)

metal clip

(c)

plastic clip

(d)

copper wire