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What is the value of current in a discharging capacitive circuit if the initial current is 2A at time t=RC.(a) 0.74A(b) 1.26A(c) 3.67A(d) 2.89AThis question was posed to me in semester exam.The origin of the question is Growth and Decay topic in portion Capacitance and Capacitors of Basic Electrical Engineering

Answer»

The correct choice is (b) 1.26A

For EXPLANATION: At TIME t=RC, that is the time CONSTANT, we know that the value of current at that time interval is equal to 63% of the initial charge in the discharging CIRCUIT. Hence, I = 2*0.63 = 1.26A.



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