# The diagrams below show regions of equipotentials.A positive charge is moved from A to B in each diagram. Option 1) Maximum work is required to move q in figure (c). Option 2) In all the four cases the work done is the same. Option 3) Minimum work is required to move q in figure (a). Option 4) Maximum work is required to move q in figure (b).

As we discussed in

Work done in moving a charge -

Always be zero in equipotential surface.

-

work done is given as w=q.sv

In all the four cases the potential difference  from A to B is same

$\therefore In all the four cases the work done is same$

Option 1)

Maximum work is required to move q in figure (c).

This option is incorrect

Option 2)

In all the four cases the work done is the same.

This option is correct

Option 3)

Minimum work is required to move q in figure (a).

This option is incorrect

Option 4)

Maximum work is required to move q in figure (b).

This option is incorrect

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