1.

A circuit cosisting of a constant e.m.f. 'E' a self induction 'L' and a resistance 'R' is closed at t=0 The relation between the current I in the circuit and time t is as shown by curve 'a' in the fig. When one or more of paraments E,R & L are changed, the curve 'b' is obtained The steady state current is same in both the cases Thenit is possible that:

Answer»

E & R are KEPT CONSTANT & L is increased
E & R are kept constant & L is decreased
E & R are both halved and L is kept constant
E & R are kept constant and R is decreased

Answer :A::C


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