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
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
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