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)

$10^{5}$V

Answer 2

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