ICSE ICSE Class 8 - CISCE Question Bank Solutions

A gold-leaf electroscope is to be charged positively by conduction. For this

A glass rod rubbed with silk is touched with the disc of a negatively charged gold leaf electroscope. The divergence of leaves will

The rod in a gold leaf electroscope is made up of

The lightning conductor is made up of:

What do you understand by electricity at rest?

Why does a plastic comb rubbed with dry hair attract bits of paper?

Who discovered the way of producing electricity by friction?

Name two substances which can be charged by friction.

What are the two kinds of charges?

A glass rod is rubbed with silk. State the kind of charge acquired by each.

An ebonite rod is rubbed with fur. State the kind of-charge acquired by each.

Describe an experiment to demonstrate that there are two r kinds of charges.

How will you show that like charges repel and unlike charges attract each other?

A glass rod rubbed with silk is suspended near an ebonite r rod rubbed with fur. What will be your observation? Give a reason to your answer.

An ebonite rod rubbed with fur is suspended near another ebonite rod rubbed with fur. State your observation and give a reason to support your answer.

What do you mean by conservation of charges?

An ebonite rod is rubbed with fur. Compare the charges acquired by them.

Name three constituents of an atom and state the kind of charge on each of them.

What is the net charge on an atom?

Briefly describe the structure of an atom.