The work which is required to be done to make an arrangement of four particles each having a charge $+q$ such that the particles lie at the four corners of a square of side $a$ is .......
The work which is required to be done to make an arrangement of four particles each having a charge $+q$ such that the particles lie at the four corners of a square of side $a$ is .......
- A
$(4+\sqrt{2}) \frac{k q^2}{a}$
- B
$4 \frac{ kq ^2}{ a }$
- C
$(2+\sqrt{2}) \frac{k q^2}{a}$
- D
$2 \frac{k q^2}{a}$
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