Name any four insulators.

Important Questions on Electric Current and its Effects

EASY

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 14 - Electric Current and its Effects>Exercise>Q 2

Name the materials used for making filament of an electric bulb.

EASY

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 14 - Electric Current and its Effects>Exercise>Q 2

Name the materials used for making heating element of an electric heater.

MEDIUM

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 14 - Electric Current and its Effects>Exercise>Q 3

Name any four electrical appliances in which the heating effect of current is utilised.

EASY

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 14 - Electric Current and its Effects>Exercise>Q 1

What is meant by resistance of a wire?

EASY

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 14 - Electric Current and its Effects>Exercise>Q 2

What is an electromagnet?

MEDIUM

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 14 - Electric Current and its Effects>Exercise>Q 3

What is the relationship between the amount of electric current passed and the heat produced?

EASY

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 14 - Electric Current and its Effects>Exercise>Q 1

Give the electrical symbols for Resistance.

EASY

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 14 - Electric Current and its Effects>Exercise>Q 1

Give the electrical symbols for Electrical cell.