Can anyone please explain this Answer?
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Answer:
Correct Answer is [ C.] q2/4πε0a
Explanation:
PEi = Initial energy of system = Q2/8πε0R
(self energy of shell)
PEf = Final energy of system = Q2/8πε0R + q x (-q)/4πε0a + kQ x q/R + kQ(−q)/R
⇒ Q2/8πε0R - q2/4πε0a
(self energy of shell) (Interaction energy between various charges)
⇒ Work done = PEf – PEi
= -q2/4πε0a
★ Magnitude of work done = q2/4πε0a
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Answer:
Option C
Explanation:
Refer to attachment please ...
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