A student uses wires, batteries, and bulbs to create three circuits and then collects data on voltage, current, and resistance of each. Describe the conclusion the student can draw about the mathematical relationship of these three variables.

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up