MHT CET · Physics · Electrostatics
If a unit charge is taken from one point to another point over an equipotential surface, then
- A work is done on the charge.
- B work is done by the charge.
- C work done on the charge is constantly increasing.
- D work done to move a charge is zero.
Answer & Solution
Correct Answer
(D) work done to move a charge is zero.
Step-by-step Solution
Detailed explanation
\(\therefore \quad\) The work done in moving a charge q ,
\(\mathrm{W}=\mathrm{q} \Delta \mathrm{~V}\)
For equipotential surfaces, \(\Delta \mathrm{V}=0\)
\(\therefore \quad \mathrm{W}=0\)
\(\mathrm{W}=\mathrm{q} \Delta \mathrm{~V}\)
For equipotential surfaces, \(\Delta \mathrm{V}=0\)
\(\therefore \quad \mathrm{W}=0\)
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