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The work done to move a charge along an ...

The work done to move a charge along an equipotential from `A` to `B`

A

cannot be defined as `-int_(A)^(B)E.dl`

B

must be defined as `-int_(A)^(B)E.dl`

C

is zero

D

can have a non-zero value

Text Solution

Verified by Experts

The correct Answer is:
C
Work done in displacing a cahrge particle is given by `W_(12)=q(V_(2)-V_(1))` and the line integral of electrical field from point 1 to 2 gives potential difference `V_(2)-V_(1)=-int_(1)^(2)E.dl` for equipotential surface, `V_(2)-V_(1)=0 and W=0`.
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