Question

an activity to prove that electrostatic force is a non contact force

Answer 1

I hope this hepls
Aim: To show that electrostatic force is a non-contact force.

Materials required: A plastic comb, pieces of paper

Method:

Take the plastic comb and rub it on your head or on a woollen cloth. The bring it near pieces of paper (without letting the comb touch the paper). 

Observation and Conclusion:

You will observe that the pieces of paper will get attracted towards the comb, even when the comb is not in contact with them.The force exerted is called electrostatic force. This shows that electrostatic force is a non-contact force.