In the circuit shown in Fig. 7.81v(t) = 56e–200t V, t > 0i(t) = 8e–200t mA, t > 0(a)...

In the circuit shown in Fig. 7.81

v(t) = 56e–200t V, t > 0

i(t) = 8e–200t mA, t > 0

(a) Find the values of R and C .

(b) Calculate the time constant τ.

(c) Determine the time required for the voltage to decay half its initial value at t = 0.