Living Science Physics 8>Chapter 8 - Electricity>Exercises>Q F

EASY

8th ICSE

IMPORTANT

Earn 100

A fan of $60 W$ runs for $75$ hours in a month. How much electrical energy is consumed?

Important Questions on Electricity

MEDIUM

8th ICSE

IMPORTANT

Living Science Physics 8>Chapter 8 - Electricity>Exercises>Q F

An electric kettle rated

2.2 kW

works for

4

hour a day. Calculate the number of units produced by it in

20

days.

MEDIUM

8th ICSE

IMPORTANT

Living Science Physics 8>Chapter 8 - Electricity>Exercises>Q F

A heater is rated at

5 kW

. Calculate the cost of energy consumed by it in

30

days. If it is run for

2

hours daily. The cost of

1 kWh

is priced at

₨ 4.20

.

HARD

8th ICSE

IMPORTANT

Living Science Physics 8>Chapter 8 - Electricity>Exercises>Q F

Five LED bulbs of

8 W

each, two fans of

40 W

each, an electric motor with

3 kW

, and a geyser of

5 kW

are used for

8

hours a day by a family. Calculate the total energy consumed in

30

days and the cost of electricity used in one day at the rate of

₨ 5

per unit.

MEDIUM

8th ICSE

IMPORTANT

Living Science Physics 8>Chapter 8 - Electricity>Exercises>Q G

Yashika was given an electroscope with its gold leaves diverged. What do the diverged leaves indicate? She was also given a rod which she did not know was charged or not. Yashika touched the rod to the cap of the electroscope to find that the divergence of the gold leaf decreased. What should she infer about the charge status of the rod?

MEDIUM

8th ICSE

IMPORTANT

Living Science Physics 8>Chapter 8 - Electricity>Exercises>Q H

Draw the diagram for identifying the nature of charge of an object using a positively charged electroscope.

MEDIUM

8th ICSE

IMPORTANT

Living Science Physics 8>Chapter 8 - Electricity>Exercises>Q H

Draw the diagram of a lightning conductor.

EASY

8th ICSE