EASY
10th CBSE
IMPORTANT
Earn 100

Name the physical quantity expressed as the product of potential difference and electric current.
(Electrical resistance / Electric power/ Electrical energy)

33.33% studentsanswered this correctly

Important Questions on Electricity

MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 15
Prove: 1 kWh=3.6 MJ.
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 16

Name the unit used in selling electrical energy to consumers.

(Choose from: Calorie/ kilowatt hour/ newton metre/ Joule)

EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 17

What is the commercial unit of energy?

(Choose from Calorie, kilowatt hour, newton metre, Joule)

EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 18
Define kWh.
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 19
What is the difference between kilowatt and kilowatt hour?
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 20
Why does the cord of an electric heater not glow while the heating element does? 
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 21

(a) What material is used in making the filament of an electric bulb?

(b) Name the characteristics which make it suitable for this.

EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 22
Which gas is filled in the electric bulb and why?