If a machine does 200 J of work in 5 seconds, what is its power? (2022)

Practice Questions

Q1
If a machine does 200 J of work in 5 seconds, what is its power? (2022)
  1. 40 W
  2. 50 W
  3. 20 W
  4. 30 W

Questions & Step-by-Step Solutions

If a machine does 200 J of work in 5 seconds, what is its power? (2022)
  • Step 1: Identify the work done by the machine, which is 200 Joules (J).
  • Step 2: Identify the time taken to do the work, which is 5 seconds (s).
  • Step 3: Use the formula for power, which is Power (P) = Work Done (W) / Time (t).
  • Step 4: Substitute the values into the formula: P = 200 J / 5 s.
  • Step 5: Calculate the result: 200 J divided by 5 s equals 40 Watts (W).
  • Power Calculation – Power is defined as the rate at which work is done, calculated by dividing the work done by the time taken.
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