There is a small metallic ring of radius lo and having negligible resistance placed perpendicular...

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There is a small metallic ring of radius lo and having negligible resistance placed perpendicular to a constant magnetic field Bo One end of a rod is hinged at the centre of ring O and other end is placed on the ring Now rod is rotated with constant angular velocity mo by some external agent and circuit is connected as shown in the figure initially switch is open and capacitor is uncharged If switch S is closed at t 0 then calculate heat loss from the resistor R2 from t 0 to the instant when voltage across the capacitor becomes Vo Assume plane of ring to be horizontal and friction to be an absent at all the contacts Assume R 2R Bolo 4V 2 1 2 A CV2 Lcv 6 C CV B Bo O xx XX S R www www R

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