Question

Two identical conducting balls A and B give charges minus q and + 3 q respectively they are brought in contact with each other and each other and then separated by a distance D apart find the nature of the cloud force between them

Answer 1

Given that, ball A carry a charge of -q and ball B carry a charge of +3q.

Also given in question that, ball A and ball B are brought in contact with each other and then separated by a distance D.

We have to find the nature of force between both the balls.

Since, they are brought in contact with each other. So, charge on ball is given by:

= (Charge of ball A + Charge on ball B)/2

= (-q + 3q)/2

= 2q/2

= q

Therefore, both balls are carrying a charge of +q.

The nature of coulomb force between them is repulsive in nature. As, both the balls are carrying positive charge.

$\rule{200}2$

Additional Information

Charge is inherent property of matter due to which they attract or repel each other.

→ Charges is of two types: positive and negative.

→ Like charges repel each other and unlike charges attract each other.

→ It is additive in nature i.e. +6C -3C = +3C

→ It is conserved i.e. charge can neither be created nor be destroyed, but can transfer from one body to another body.

→ Charge is invariant. It doesn't vary with velocity.