MEDIUM
7th CBSE
IMPORTANT
Earn 100

Differentiate between: Miniature circuit breaker (MCB) and Fuse.

Important Questions on Electric Current and Circuits

MEDIUM
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Exercises>Q 3
What is a heating effect of an electric current?
HARD
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Exercises>Q 1
What is the role of the fuse in an electric circuit? Explain.
MEDIUM
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Exercises>Q 2
Draw the diagram of an electric circuit using symbols representing a cell, a plug key, resistance, and an electric lamp.
HARD
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Exercises>Q 3
Describe the working of an electric bell.
HARD
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Exercises>Q 4
What is an electromagnet? List its uses.
HARD
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Exercises>Q 5
What is a solenoid? How can you increase its strength?
MEDIUM
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Exercises>Q 6
If the bulb does not glows in a circuit then what can be the reason for this?
HARD
7th CBSE
IMPORTANT
The Science Hub>Chapter 13 - Electric Current and Circuits>Exercises>Picture-Based Question
Look at the given picture and label all its parts. Also mention how does it work.
Question Image