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Figure shows some equipotential line dis...

Figure shows some equipotential line distributed in space. A charged object is move from point A point B.

A

The work done in figure (I ) is the greatest

B

The work done in figure (ii) is least.

C

The work done is the same in figures (i), (ii), (iii).

D

The work done in figure (iii) is greater than figure (ii) but equal to that in figure (i).

Text Solution

Verified by Experts

The correct Answer is:
A, D
Work done when electric charge moves due to electric force,
`W_(12)= q(V_(2)-V_(1))`
In all three figures `V_(1) = 20 V, V_(2)= 40` and `DeltaV= V_(2)-V_(1)`
`:. DeltaV= 40 - 20 = 20 V ` is same and charge q is also same . Hence `W_(12) = qDeltaV` is same in all thrree cases .
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