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A 1000 W heater operates for 3 hours. How much energy does it consume?
A 1000 W heater operates for 3 hours. How much energy does it consume?
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Practice Questions
1 question
Q1
A 1000 W heater operates for 3 hours. How much energy does it consume?
3000 J
1080000 J
3600000 J
1000 J
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Energy consumed is E = P * t. Here, P = 1000 W and t = 3 hours = 10800 seconds. Thus, E = 1000 W * 10800 s = 10800000 J.
Questions & Step-by-step Solutions
1 item
Q
Q: A 1000 W heater operates for 3 hours. How much energy does it consume?
Solution:
Energy consumed is E = P * t. Here, P = 1000 W and t = 3 hours = 10800 seconds. Thus, E = 1000 W * 10800 s = 10800000 J.
Steps: 5
Show Steps
Step 1: Identify the power of the heater. The power (P) is given as 1000 W (watts).
Step 2: Identify the time the heater operates. The time (t) is given as 3 hours.
Step 3: Convert the time from hours to seconds. Since 1 hour = 3600 seconds, multiply 3 hours by 3600 seconds/hour: 3 * 3600 = 10800 seconds.
Step 4: Use the formula for energy consumed, which is E = P * t. Substitute the values: E = 1000 W * 10800 s.
Step 5: Calculate the energy consumed. Multiply 1000 by 10800 to get E = 10800000 J (joules).
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