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In a rectangular circuit ABCD a capacitor having capacitance `C = 20 muF` is charged to a potential difference of 100 V. Resistance of circuit is `R = 10 Omega`. Another rectangular conducting loop PQRS is kept side by side to the first circuit with sides AB and PQ parallel and close to each other. The length and width of rectangle PQRS is a = 10 cm and b = 5 cm respectively and AB as well as BC is large compared to a. PQ is located near the centre of side AB with d = 5 cm. The loop PQRS has 25 turns and the wire used has resistance of `1 Omega m^(–1)`. The switch S is closed at time t = 0. Neglect self inductance of loops. (a) Find the current in ABCD at `t = 200 mus`. (b) Find the current in PQRS at `t = 200 mus`. |
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Answer» Correct Answer - (a) `3.7 A` (b) `35 mu A` |
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