Question

A positively charged ball hangs from a long silk thread. We put a positive test charge q${}_0$ at a point and measure F/q${}_0$, then it can be predicted that field E

• A. > F/q${}_0$
• B. < F/q${}_0$
• C. is equal to F/q${}_0$
• D. none of these

Answer 1

The correct option is A > F/q${}_0$

Here the field $E=F/q_0+mg/Q$ where $Q=$ charge of ball and $m=$ mass of ball.
Thus, $E>F/q_0$