Question

What will be the nature of charge on the metal paper clip of an electroscope when a positively charged body is brought in contact with it?
A. Positive
B. Negative
C. Partially negative
D. None of the above

Answer 1

To solve this kind of problem we need to know the process of conduction where a charge is getting transferred from one material to another conductive material. Here the positively charged body has an excess of protons which get transferred through conduction.

Complete answer:
The charged transfer by the conduction process involves touching of a charged material to a conductive material. In this way the charges get transferred from the charged material to the conductive material or we can say conductor and this method is useful for the charging of the conductors.

From this problem we will have to tell the nature of charge on the metal paper clip of the electroscope when a positively charged body is brought in contact with it.Here in this case the charge transfer by conduction is done using a positively charged body.We know that a positively charged body consists of excess protons which in other terms are defined as a deficit of electrons.

Now let us consider that there are two bodies, one is charged and the other one is a neutral metal paper clip. When the positively charged body comes in contact with the neutral metal paper clip, the electrons present in the metal paper clips get attracted towards the positively charged body. After this process, having lost electrons to the positively charged body, the neutral metal paper clip will experience a deficit of electrons which makes it a positively charged metal paper clip.

Therefore, the correct option is A.

Note: Similarly in case of negative charge we have to use a negatively charged body case the metal paper clip becomes negative in nature. Where the negatively charged body has an excess of electrons. Charge transformation can also take place through the process of induction where the charged body and the neutral are not touched to each other but brought near or close to each other.