Shalini Samadhiya Solutions for Exercise 5: Exercises

Author:Shalini Samadhiya

Shalini Samadhiya Science Solutions for Exercise - Shalini Samadhiya Solutions for Exercise 5: Exercises

Attempt the practice questions from Exercise 5: Exercises with hints and solutions to strengthen your understanding. The Science Hub solutions are prepared by Experienced Embibe Experts.

Questions from Shalini Samadhiya Solutions for Exercise 5: Exercises with Hints & Solutions

HARD
7th CBSE
IMPORTANT

Describe the working of an electric bell.

HARD
7th CBSE
IMPORTANT

What is an electromagnet? List its uses.

HARD
7th CBSE
IMPORTANT

What is a solenoid? How can you increase its strength?

MEDIUM
7th CBSE
IMPORTANT

If the bulb does not glows in a circuit then what can be the reason for this?

HARD
7th CBSE
IMPORTANT

Look at the given picture and label all its parts. Also mention how does it work.
Question Image

MEDIUM
7th CBSE
IMPORTANT

Can we use copper wire instead of tungsten wire to make the filament of an electric bulb? Give a reason for your answer. 

MEDIUM
7th CBSE
IMPORTANT

Wire 'A' has a lower melting point than wire 'B'. Which wire would you choose to make a fuse to allow more current to pass through? Give reason for your answer.

MEDIUM
7th CBSE
IMPORTANT

Wire 'A' has a lower melting point than wire 'B'. Which wire would you choose to make a fuse to allow less current pass through ? Give reason for your answer.