62 One half of a semicircular ring of radius R has charge Q while the other half has Q The ring is placed in xy plane where a

Question

62 One half of a semicircular ring of radius R has charge Q while the other half has Q The ring is placed in xy plane where a uniform electric field exists E E i R 4 3 OFR my X Find the work required to be done by external agent to rotate the ring about z axis by 90 in clockwise direction 1 QER 2 QER 7

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