Question

A hot plate has a resistance of 50 Ω. If the current flowing through it is 2.4 A, then the potential difference across the device is

Answer 1

Potential difference = (current) x (resistance)

= (2.4 A) x (50 ohms)

= 120 volts

Answer 2

E = IR. 2.4A x 50 Ω = 120V.