The diagrams below show regions of equipotentials.
A positive charge q is moved from A to B in each diagram.
A
In all the four cases the work done is the same.
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B
Minimum work is required to move q in figure (a).
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C
Maximum work is required to move q in figure (b)
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D
Maximum work is required to move q in figure (c).
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Solution
The correct option is A In all the four cases the work done is the same. W=q△V So in all cases, from moving A to B change in potential is same Hence work done will be same.