Question

The current in a hair dryer measures 24 amps. The resistance of the hair dryer is 13 ohms. What is the voltage?

Answer 1

voltage = current * resistance
voltage = 24 * 13
voltage = 312

Answer 2

V = 312 volts

note that V = IR → ( I is current and R is resistance )

thus V = 24 × 13 = 312