In the given R-C circuit, the current reaches its maximum value :
(a) after 50 µs of turning on the switch
(b) after 100 µs of turning on the switch
(c) after 1000 µs of turning on the switch
(d) immediately after turning on the switch
In the circuit shown, the ammeter reads 1 ampere and voltmeter 10 volts. The internal resistance of the ammeter is 1 ohm and that of voltmeter is 50 ohms. The value of R is _______.
(a) 111 .2 ohms (b) 120 ohms (c) 100 ohms (d) 112 ohms Ans: D
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