4. (10 points) The current through an electrical device is given as i(t) = 30e-0.2t mA, and the voltage

through the device is given as v(t) = 100(1-e-0.2t) V. For this device, determine:

a. The charge delivered from t = 0 to t = 3s.

b. The instantaneous power at t=2s.

c. The total energy delivered for all time (i.e. from t=0 tot = ∞o).