Two point charges q1 and q2 are separated by a distance r are kept in externa
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Complete question :
two point charges q1 nad q2 are placed at a distance r1 and r2 respectively in an external electric field . obtain an expression for total work done in assembling this configuration?
Work-done to bring a charge q₁ in the electric field at a distance r₁=q₁V(r₁)
Work-done to bring a charge q₂ in the electric field at a distance r₂ = q₂V(r₂)
Work-done on q2 to move it against the force of charge q1 is =1/4πεο [ q₁q₂/r₁₂
Therefore the total work done is
=q₁V(r1) +q₂V(r₂)+1/4πεο [ q₁q₂/r₁₂]
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