New Millennium Science Super Simplified Physics CLASS X>Chapter 3 - Electricity>UNSOLVED NUMERICALS FOR PRACTICE>Q 1

EASY

10th CBSE

IMPORTANT

Earn 100

An electric current of $2 A$ passes through a coil of $10 Ω$ resistance for $10$ minutes. Calculate the amount of heat produced.

Important Questions on Electricity

EASY

10th CBSE

IMPORTANT

New Millennium Science Super Simplified Physics CLASS X>Chapter 3 - Electricity>UNSOLVED NUMERICALS FOR PRACTICE>Q 2

36000 J

heat energy is to be produced in an electric heater of resistance

1000

ohms through which electric current is passed for

5

minutes. Calculate the current passing through the heater.

MEDIUM

10th CBSE

IMPORTANT

New Millennium Science Super Simplified Physics CLASS X>Chapter 3 - Electricity>UNSOLVED NUMERICALS FOR PRACTICE>Q 3

A heater rated $250 W$ is connected to $220 V$ supply. Calculate resistance of the heater.

MEDIUM

10th CBSE

IMPORTANT

New Millennium Science Super Simplified Physics CLASS X>Chapter 3 - Electricity>UNSOLVED NUMERICALS FOR PRACTICE>Q 3

A heater rated $250 W$ is connected to $220 V$ supply. Calculate

current flowing through the heater.

MEDIUM

10th CBSE

IMPORTANT

New Millennium Science Super Simplified Physics CLASS X>Chapter 3 - Electricity>UNSOLVED NUMERICALS FOR PRACTICE>Q 4

An electric kettle of

500 W

is used to heat water every day for

2

hours. Calculate the number of units of electrical energy consumed by it in

10

days.

MEDIUM

10th CBSE

IMPORTANT

New Millennium Science Super Simplified Physics CLASS X>Chapter 3 - Electricity>UNSOLVED NUMERICALS FOR PRACTICE>Q 5

Calculate the cost of using a

2 kW

immersion rod for heating water in a house for one hour each day for

60

days if the rate is

₹ 1.50

per

kWh

.

MEDIUM

10th CBSE

IMPORTANT

New Millennium Science Super Simplified Physics CLASS X>Chapter 3 - Electricity>UNSOLVED NUMERICALS FOR PRACTICE>Q 6

A torch bulb is rated

6 V

and

750 mA

. Calculate the energy consumed by the bulb in

4

hours.