Question

The potential at a point due to a positive charge of $100\mu C$ at a distance of $9m$, is

• A. $10^{4}V$
• B. $10^{5}V$
• C. $10^{6}V$
• D. $10^{7}V$

Answer 1

Answer: (B)

$V=9\times 10^9\times \frac{Q}{r}$
$=9\times 10^9\times \frac{100\times 10^{-6}}{9}$
$=10^{5}V$