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2. Electric Potential and Capacitance
easy
Charge $q_{2}$ is at the centre of a circular path with radius $r$. Work done in carrying charge $q_{1}$, once around this equipotential path, would be
A
$\frac{1}{4 \pi \varepsilon_{0}} \times \frac{q_{1} q_{2}}{r^{2}}$
B
zero
C
$\frac{1}{4 \pi \varepsilon_{0}} \times \frac{q_{1} q_{2}}{r}$
D
infinity
(AIPMT-1994)
Solution
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Standard 12
Physics