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 an RMS voltage of 100 V with a current of 5 A?
  1. 200 W
  2. 400 W
  3. 300 W
  4. 500 W

Questions & Step-by-Step Solutions

What is the average power consumed in an AC circuit with a power factor of 0.8 and an RMS voltage of 100 V with a current of 5 A?
  • Step 1: Identify the formula for average power in an AC circuit, which is P = V_rms * I_rms * PF.
  • Step 2: Write down the values given in the question: V_rms = 100 V, I_rms = 5 A, and Power Factor (PF) = 0.8.
  • Step 3: Substitute the values into the formula: P = 100 V * 5 A * 0.8.
  • Step 4: Calculate the multiplication: First, multiply 100 V by 5 A to get 500. Then, multiply 500 by 0.8.
  • Step 5: The result of 500 * 0.8 is 400. Therefore, the average power consumed is 400 W.
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