Question

One moving electron when comes closer to other stationary electron, then its kinetic energy and potential energy respectively ______ and ______ .

• A. increase, decreases
• B. increases, increases
• C. decrease, increases
• D. decreases, decreases

Answer 1

The correct option is C decrease, increases

Both the electrons repel each other when they come closer to each other. So, the kinetic energy of the electron decreases due to repulsion and thus its potential energy increases.
So, option C is correct.