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 current of 5 A at 230 V? (2022)
  1. 920 W
  2. 920 VA
  3. 1150 W
  4. 1150 VA

Questions & Step-by-Step Solutions

What is the average power consumed in an AC circuit with a power factor of 0.8 and a current of 5 A at 230 V? (2022)
  • Step 1: Identify the formula for average power in an AC circuit, which is P = V × I × PF.
  • Step 2: Substitute the given values into the formula: V = 230 V, I = 5 A, and PF = 0.8.
  • Step 3: Calculate the product of the voltage (230 V) and the current (5 A): 230 V × 5 A = 1150 VA (volt-amperes).
  • Step 4: Multiply the result from Step 3 by the power factor (0.8): 1150 VA × 0.8 = 920 W.
  • Step 5: Conclude that the average power consumed in the circuit is 920 W.
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