A point charge is surrounded symmetrically by six identical charges at distance $r$ as shown in the figure. How much work is done by the forces of electrostatic repulsion when the point charge $q$ at the centre is removed at infinity
A point charge is surrounded symmetrically by six identical charges at distance $r$ as shown in the figure. How much work is done by the forces of electrostatic repulsion when the point charge $q$ at the centre is removed at infinity
- A
zero
- B
$6{q^{2\,}}\,/\,4\pi {\varepsilon _0}r$
- C
${q^{2\,}}\,/\,4\pi {\varepsilon _0}r$
- D
$12{q^{2\,}}\,/\,4\pi {\varepsilon _0}r$
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- [AIPMT 1998]
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