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If a 1000 W heater runs for 2 hours, how much energy does it consume?
If a 1000 W heater runs for 2 hours, how much energy does it consume?
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Practice Questions
1 question
Q1
If a 1000 W heater runs for 2 hours, how much energy does it consume?
7200 J
14400 J
20000 J
3600000 J
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Energy = Power × Time = 1000 W × (2 × 3600 s) = 7200000 J.
Questions & Step-by-step Solutions
1 item
Q
Q: If a 1000 W heater runs for 2 hours, how much energy does it consume?
Solution:
Energy = Power × Time = 1000 W × (2 × 3600 s) = 7200000 J.
Steps: 5
Show Steps
Step 1: Understand that the heater's power is 1000 W (watts). This means it uses 1000 joules of energy every second.
Step 2: Convert the time the heater runs from hours to seconds. Since 1 hour is 3600 seconds, 2 hours is 2 × 3600 = 7200 seconds.
Step 3: Use the formula for energy consumption, which is Energy = Power × Time.
Step 4: Substitute the values into the formula: Energy = 1000 W × 7200 s.
Step 5: Calculate the energy: 1000 × 7200 = 7200000 joules.
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