Using a fixed 20 V from the power source and three lightbulbs that have the same resistance, how would you design a circuit that would allow at least one bulb to use maximum power (have maximum brightness)? 27. Test your idea by constructing the circuit. Record your observations of the power usage along different parts of the circuit below. Analyze 1. What happens to the current provided by a power source as more resistors are connected in series? more resistors are connected in parallel?