A point charge of 20 nC is fixed at the origin of x-y plane. The work done in taking a…
Physics · Class 12 · CBSE — Electrostatic Potential & Capacitance
A point charge of 20 nC is fixed at the origin of \(x-y\) plane. The work done in taking a second point charge of -50 nC from point ( \(4 \mathrm{~cm}, 0\) ) to point \((0,5 \mathrm{~cm})\) is:
- \(45 \mu \mathrm{~J}\)
- \(-45 \mu \mathrm{~J}\)
- \(90 \mu \mathrm{~J}\)
- \(-90 \mu \mathrm{~J}\)
Answer
(A) 45 ~J
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