a body is charged by 5c , determine its change in mass
Answers
Explanation:
am assuming that your question should be interpreted in a classical context. (I.e., we're not talking about adding or removing charged particles, we are talking about adding an electric charge to a previously neutral classical body, made of continuum matter.)
The answer is yes, for the following reason: consider adding charge one unit at a time. You can add the first unit without effort, as the body is neutral. But when you add the second unit, you already have to act against the repulsion between like charges. The energy you invest in order to add the second unit of charge will be added to the body's total mass-energy. Ultimately, the amount by which you increased the body's mass-energy will depend on the body's total electric charge, size, and the charge distribution. (I.e., you basically integrate the electrostatic potential energy over the body's volume, and divide it by c^2 to get the mass increase.)
(In a non-classical context, you cannot add charge without adding charged particles, and their energy will likely dominate. I.e., to raise the body's charge by one negative unit, you need to add an electron, and the rest mass of that electron will likely be many orders of magnitude larger than the energy required to add it to an already charged body