1.

A unit charge is rotated around a charge of q in a circular path at the distance of r. Then, work done will be:(a) zero(b) \(\frac{1}{4 \pi \varepsilon_{0}} \frac{q}{r^{2}} J\)(c) 2 πr J(d) 2πrq J

Answer»

(a) zero
Circular path will act like a equipotential surface. So work done in moving unit charge will be zero.



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