Voltage through a circuit is determined by the formula V = PR, where P is power, measured in watts, and R is the resistance, measured in ohms. Round answers to two decimal places as needed. a) Determine the amount of resistance that is required for 2 watts of power to produce 4 volts. b) Determine the voltage produced if 100 watts is supplied with a resistance of 40 ohms. c) Determine the amount of power that must be supplied in order to produce 50 volts if the resistance is 30 ohms.