How much energy in Joules (J) would an electric heater that draws 9.5 A when connected to a 120 V supply use if the heater were

Question

4 years ago

9

allowed to run for 2 hours.

1 answer:

leonid [27] · Answer 1 · 2022-01-06T01:29:30+03:00

<h2>Energy used by heater is 8.21 x 10⁶ J</h2>

Explanation:

Energy = Power x Time

Power = Voltage x Current

Voltage = 120 V

Current = 9.5 A

Power = Voltage x Current

Power = 120 x 9.5 = 1140 W

Time = 2 hours = 2 x 60 x 60 = 7200 s

Energy = Power x Time

Energy = 1140 x 7200

Energy = 8208000 J

Energy used by heater is 8.21 x 10⁶ J