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Physics · PYQ NEET UG 2017
हिन्दीThe diagrams below show regions of equipotentials. A positive charge is moved from A to B in each diagram. (a) Maximum work is required to move q in figure (c). (b) In all the four cases the work done is the same. (c) Minimum work is required to move q in figure (a). (d) Maximum work is required to move q in figure (b).
Correct answer · Option 1
In all the four cases the work done is the same.
Explanation
Work done in moving a charge between two equipotential surfaces depends only on the potential difference between them (\( W = q(V_B - V_A) \)). Since \( V_A \) and \( V_B \) are identical (\( 20\text{ V} \) and \( 40\text{ V} \)) in all four figures, work done is the same in all cases.
