Complex numbers are used in electronics to describe the current in an electric circuit. Ohm's law relates the current in a circuit, I, in amperes, the voltage of the circuit, E, in volts, and the resistance of the circuit, R, in ohms, by the formula E = IR. Solve the problem using this formula. Find E, the voltage of a circuit, if I = (9 + 7i) amperes and R = (3 + 7i) ohms. A (-22 + 84i) volts B (-22 - 84i) volts (84 - 22i) volts D (84 + 22i) volts