In an AC circuit, if the voltage is 120V and the current is 10A, what is the pow

Practice Questions

Q1
In an AC circuit, if the voltage is 120V and the current is 10A, what is the power factor if the real power is 600W? (2022)
  1. 0.5
  2. 0.6
  3. 0.8
  4. 1.0

Questions & Step-by-Step Solutions

In an AC circuit, if the voltage is 120V and the current is 10A, what is the power factor if the real power is 600W? (2022)
  • Step 1: Identify the given values. We have a real power of 600W, voltage of 120V, and current of 10A.
  • Step 2: Calculate the apparent power using the formula: Apparent Power = Voltage x Current.
  • Step 3: Substitute the values: Apparent Power = 120V x 10A = 1200VA.
  • Step 4: Use the power factor formula: Power Factor = Real Power / Apparent Power.
  • Step 5: Substitute the values: Power Factor = 600W / 1200VA.
  • Step 6: Calculate the power factor: Power Factor = 0.5.
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