Question

What happens when the Refill is rubbed using polythene or woollen cloth?
A.Get charged
B.Not charged
C.Remains as it is
D.None of the above

Answer 1

Hint: When a plastic refill is rubbed against polythene, both the plastic refill and the polythene become charged. The friction charging process is used here.

Complete answer:
Electric Charge:
Electric charge is a fundamental characteristic of matter that can never be proven to be unattached. Positive and negative charges are the two types of electric charges. A body is considered to be negatively charged if it contains an excess of electrons, and positively charged if it has a deficiency of electrons.
Any of the following three methods can be used to electrically charge a body:
-Friction
-Contact
-Electrostatic Induction
-Charging by friction:
Frictional electricity is the electricity (i.e. the transfer of electrons) that is produced as a result of friction.
Charging Procedure
Because of the frictional forces operating on them, there will be some transfer of electrons from one body to the other when we rub two neutral bodies together. One of the bodies receives a negative charge, while the other receives a positive charge, both of which are of identical magnitude.
So, option (A) is correct.

Note:
When rubbing a plastic refill with polythene, both the plastic refill and the polythene become charged. Charges with comparable charges repel each other, while charges with different charges attract each other.
When a silk fabric is brushed on a glass rod, the glass gains a positive charge, while the silk cloth gains a negative charge. The electrons from the glass rod are transferred to the silk material.