Question

Calculate di(0)/dt if the switch is closed at t=0.

(a) -9.9A/s

(b) -10A/s

(c) 0A/s

(d) -0.1A/s

Answer 1

The correct choice is (d) -0.1A/s

To explain: Applying KVL to the given circuit, we get:

i=i0e^-t/RC = (100/10)e^-t/100

i=10 e^-t/100

di/dt = -(10/100) e^-t/100

di(0)/dt=-0.1A/s.