Question

What is the electric potential energy of the system?

• A. $0.225J$
• B. $2.25J$
• C. $22.5J$
• D. $225J$

Answer 1

The correct option is A $0.225J$

Electric potential energy is given by $U=\frac{q_q{q}_2}{4\pi {ϵ}_{o}r}=\frac{k{q}_1{q}_2}{r}$

$⟹U=\frac{9\times {10}^9\times 5\times {10}^{-6}\times 5\times {10}^{-6}}{1}$

$⟹U=0.225J$

Answer-(A)