A machine does 500 J of work in 10 seconds. What is its power output?

Practice Questions

Q1
A machine does 500 J of work in 10 seconds. What is its power output?
  1. 50 W
  2. 100 W
  3. 200 W
  4. 500 W

Questions & Step-by-Step Solutions

A machine does 500 J of work in 10 seconds. What is its power output?
  • Step 1: Understand that power is the rate at which work is done.
  • Step 2: Know the formula for power, which is P = W/t, where P is power, W is work, and t is time.
  • Step 3: Identify the values given in the question: W (work) is 500 J and t (time) is 10 seconds.
  • Step 4: Substitute the values into the formula: P = 500 J / 10 s.
  • Step 5: Perform the division: 500 J divided by 10 s equals 50 W.
  • Step 6: Conclude that the power output of the machine is 50 watts.
  • Power Calculation – Power is the rate at which work is done, calculated using the formula P = W/t, where P is power, W is work done, and t is time.
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