#### Electricity English Medium Free Online Test 1 Mark Questions 2020-2021

10th Standard

Reg.No. :
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Science

Time : 00:15:00 Hrs
Total Marks : 15

Part A

15 x 1 = 15
1. 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.

2. 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.

3. 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

4. The S1 unit of power is

(a)

joule

(b)

ampere

(c)

Watt

(d)

ohm

5. 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

6. 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

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

(a)

Volt

(b)

Ohm

(c)

Newton

(d)

Ampere

8. If resistance decreases, then current will

(a)

increase

(b)

double

(c)

decrease

(d)

constant

9. If there are two bulbs i.e lS0W 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

10. All good conductors have high

(a)

Resistance

(b)

Specific resistance

(c)

Voltage

(d)

None of the above

11. Conductivity is the ________ of resistivity.

(a)

opposite

(b)

reciprocal

(c)

equal

(d)

none of the above

12. How many terminals an electric bulb consist of?

(a)

2

(b)

4

(c)

3

(d)

1

13. 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

14. 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

15. 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