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 allowed to run for 2 hours.

Respuesta :

Energy used by heater is 8.21 x 10⁶ J

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

Lanuel

The quantity of energy consumed by this electric heater is equal to 8,208,000 Joules.

Given the following data:

  • Current = 9.5 A
  • Voltage = 120 V
  • Time = 2 hours

Conversion:

1 hour = 3600 seconds

2 hours = 7200 seconds

To determine the quantity of energy consumed by this electric heater:

First of all, we would calculate the power rating of the electric heater as follows;

[tex]Power = current \times voltage\\\\Power = 9.5 \times 120[/tex]

Power = 1140 Watts

Now, we can determine the quantity of energy by using this formula:

[tex]Energy = power \times time\\\\Energy = 1140 \times 7200[/tex]

Energy = 8,208,000 Joules

Read more here: https://brainly.com/question/13636233

ACCESS MORE