# Samacheer Kalvi Science Physics Class 10 Electricity Questions - 1

Question: 1

Kilowatt hour is the unit of

(A) Electrical power

(B) Electrical energy

(C) Conductivity

(D) Resistivity

Ans: B

Electrical energy

Question: 2

Which of the following is correct?

(A) Rate of change of charge is current

(B) Rate of change of energy is current

(C) Rate of change of current is charge

(D) Rate of change of charge is electrical power

Ans: A

Rate of change of charge is current

Question: 3

SI unit of resistance is

(A) Ohm meter

(B) Ohm

(C) Joule

(D) Mho

Ans: B

Ohm

Question: 4

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

(A) Closing the switch completes the circuit

(B) Closing the switch breaks the current

(C) The switch produces electricity

(D) The bulb is getting charged

Ans: A

Closing the switch completes the circuit

Question: 5

LED stands for _____

light emitting diode

Question: 6

The power of an electric device is a product of ____ and _____

voltage, current

Question: 7

The wiring in a house consists of ____ circuits.

parallel

Question: 8

The ratio of the potential difference to the current is known as _____