EASY
10th CBSE
IMPORTANT
Earn 100

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

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

Important Questions on Electricity

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?
MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 23

Answer the following question regarding an electric heater:

Why is the heating coil placed in a circular porcelain plate?

EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 23

Answer the following question regarding an electric heater:

Why does heating coil not produce any visible light?

EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 24

Amongst the units given below, which units are of electric energy?

EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 24

Amongst the units given below, which units are of electric power?

EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 25

Distinguish between kilowatt and kilowatt hour.

EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 25
How many kilowatts are equal to one horse power?
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 26
For an electric heater rated 4 kW,  200 V. Calculate the current required.