Question

does mass of body change on charging

Answer 1

In the process of charging a body neither gains not lose..

so this means mass doesn't changes
hope it helps..

Answer 2

Since we know that charging of a body depends upon transfer of electrons. So, if a body becomes negatively charged it will gain electrons that is its mass will increase and is a body becomes positively charged it loses electrons hence its mass will decrease.
~Hope it helps~