Charge q2 is at the center of a circular path with radius r. work done in carrying charged q1 once a round this equipotential path, would be.
(a) \(\frac{1}{4\pi\varepsilon_0}\)\(\times\frac{q_1q_2}{r^2}\)
(b) \(\frac{1}{4\pi\varepsilon_0}\) \(\times\frac{q_1q_2}{r}\)
(c) zero
(d) infinite