What is the average power consumed in an AC circuit with a power factor of 0.8 a

Practice Questions

Q1
What is the average power consumed in an AC circuit with a power factor of 0.8 and a maximum power of 100 W?
  1. 80 W
  2. 100 W
  3. 120 W
  4. 160 W

Questions & Step-by-Step Solutions

What is the average power consumed in an AC circuit with a power factor of 0.8 and a maximum power of 100 W?
  • Step 1: Understand that average power (P_avg) is what we want to find.
  • Step 2: Know that the formula to calculate average power in an AC circuit is P_avg = P_max × power factor.
  • Step 3: Identify the maximum power (P_max) given in the question, which is 100 W.
  • Step 4: Identify the power factor given in the question, which is 0.8.
  • Step 5: Plug the values into the formula: P_avg = 100 W × 0.8.
  • Step 6: Calculate the result: 100 W × 0.8 = 80 W.
  • Step 7: Conclude that the average power consumed is 80 W.
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