How much work is required to separate the two charges infinitely away from each other?
Answers
Explanation:
The electric potential energy of two point charges q1 and q2 , separated by a distance r is, U(r)=q1q24πϵ0r U ( r ) = q 1 q 2 4 π ϵ 0 r . Work done on the system to change its potential energy from U1 to U2 is given by, Wext=U2−U1 W e x t = U 2 − U 1 .
Answer:
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Potential energy of a charge in electric field of another charge is equal to the work required to be done to bring it from infinity to the given point. So this potential energy is to be spent to take it away from the charge under reference to infinity from existing position.
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0….for the obvious reasons…thay are already separated…mathematically proofing..they are infinitely away from each other hence zero force between them, and if force is zero..work is zero.
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