HARD
10th CBSE
IMPORTANT
Earn 100

Two identical resistors each of resistance 20 Ω are connected (i) in parallel and (ii) in series, in turn, to a battery of 10 V. Calculate the ratio of power consumed in the combination of resistors in the two cases.

Important Questions on Electricity

EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Practice Problems-VII>Q 16
A 500 W electric Iron used in a house for 2 hours per day. Calculate the cost to use it for 60 days at ₹ 3.20 per kWh.
MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Practice Problems-VII>Q 17
An electric iron consumes energy at a rate of 840 W when heating is at the maximum rate and 360 W when the heating is at the minimum. The voltage is 220 V. What are the current and the resistance in each case.
MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Practice Problems-VII>Q 18
An electric device operates at 24 V and has a resistance of 8 Ω. Calculate its power consumed by the device and current flowing through it.
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 1
What do you understand by the term fuse in an electric circuit?
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 2
Where is a fuse placed in an electric circuit?
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 3
What is meant by the statement that the rating of fuse in a circuit is 5 A?
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 4
State the composition of material of the fuse wire.
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-7>Q 5
Name two common materials used as heating elements.