When a charged rod is moved towards an uncharged paper cylinder suspended by a string, the cylinder gets attracted to the rod initially, and then moves away with a jerk. Explain why.

Important Questions on Electricity and Lightning

EASY

8th CBSE

IMPORTANT

Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q B

Why do the leaves of a gold-leaf electroscope diverge when a charged body is brought in contact with its disc? Do they always diverge to the same extent?

MEDIUM

8th CBSE

IMPORTANT

Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q B

What happens to the charge on an electroscope when its disc is connected to that of an uncharged electroscope with the help of a conducting wire? What happens to the leaves of the two electroscopes?

EASY

8th CBSE

IMPORTANT

Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q B

What are lightning conductors?

MEDIUM

8th CBSE

IMPORTANT

Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q C

Mention three ways by which a body can be charged. Describe an activity to illustrate how a body can be charged by induction. What would happen if you moved the rod away before separating the spheres?

HARD

8th CBSE

IMPORTANT

Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q C

With the help of a diagram, describe a gold-leaf electroscope.

MEDIUM

8th CBSE

IMPORTANT

Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q C

How would you use an electroscope to determine the nature of the charge (positive or negative) on a body?

MEDIUM

8th CBSE