A square of side ‘$a$’ has charge $Q$ at its centre and charge ‘$q$’ at one of the corners. The work required to be done in moving the charge ‘$q$’ from the corner to the diagonally opposite corner is
A square of side ‘$a$’ has charge $Q$ at its centre and charge ‘$q$’ at one of the corners. The work required to be done in moving the charge ‘$q$’ from the corner to the diagonally opposite corner is
- A
Zero
- B
$\frac{{Qq}}{{4\pi { \in _0}a}}$
- C
$\frac{{Qq\sqrt 2 }}{{4\pi { \in _0}a}}$
- D
$\frac{{Qq}}{{2\pi { \in _0}a}}$
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