A 15.6 W resistor and a second resistor are wired in parallel to a dc power supply. The current in the 15.6 W resistor is 2.28 A; the current in the second resistor is 1.17 A. Calculate: a) the current in the circuit, b) the potential across the circuit, c) the equivalent resistance of the circuit, d) the resistance of the second resistor, e) the power dissipated by the circuit.