In a series resistance-capacitance DC circuit, the instantaneous charge Q on the capacitor as a function of time (where t= 0 is the moment the circuit is energized by closing a switch) is given by the equation Q(t) = CV(1 - e "/(RC) ), where C, V, and R are constants. Further, the instantaneous charging current I is the rate of change of charge on the capacitor, or I = dQ / dt. . a. Find the expression for Ic as a function of time. b. If C =10 * farads, R= 10 ohms, and V = 10 volts, what is the charging current after 100 seconds? (Hint: When placed into the function in part a the units can be combined into amps.) a. lc =