%) Problem 11: The excess charge at a given point in a circuit as a function of time is described by the equation q(1) = 6.5 - 3.5t + 2.81. where the charge is in coulombs when the time is in seconds. 50% Part (a) Calculate the instantaneous current, in amperes, that flows through the circuit at time (1 = 7.5 s. D A 50% Part (b) Calculate the average current, in amperes, that flows through the circuit between to = 0 and t1 = 7.5 seconds. G Iave