Vaishali Gupta, Shalini Bajaj and, Supriya D.Sheshadri Solutions for Exercise 3: Exercises

Author:Vaishali Gupta, Shalini Bajaj & Supriya D.Sheshadri

Vaishali Gupta Science Solutions for Exercise - Vaishali Gupta, Shalini Bajaj and, Supriya D.Sheshadri Solutions for Exercise 3: Exercises

Attempt the free practice questions from Exercise 3: Exercises with hints and solutions to strengthen your understanding. Science Horizons solutions are prepared by Experienced Embibe Experts.

Questions from Vaishali Gupta, Shalini Bajaj and, Supriya D.Sheshadri Solutions for Exercise 3: Exercises with Hints & Solutions

EASY
7th CBSE
IMPORTANT

Which of these is a basic component of an electric circuit?

MEDIUM
7th CBSE
IMPORTANT

Which of the following appliances function because of the heating effect of current?

MEDIUM
7th CBSE
IMPORTANT

Which of the following acts as a safety device to prevent a large amount of electric current from flowing through a circuit?

MEDIUM
7th CBSE
IMPORTANT

Which of the following is not a component of an electromagnet?

EASY
7th CBSE
IMPORTANT

Give reason for the following:

It is important to have standard methods of drawing circuit diagrams.

EASY
7th CBSE
IMPORTANT

Give reason for the following:

Sometimes filaments in an electric bulb get fused. 

EASY
7th CBSE
IMPORTANT

Give reasons for the following.

Electric fuse wire is made of a material with a low melting point.

MEDIUM
7th CBSE
IMPORTANT

Give reasons for the following.

A metal safety pin stuck to an electromagnet falls down when the current in the electromagnet is switched off.