What is the formula for the average power consumed in an AC circuit with a resis

Practice Questions

Q1
What is the formula for the average power consumed in an AC circuit with a resistor? (2019)
  1. P = VI
  2. P = V²/R
  3. P = I²R
  4. All of the above

Questions & Step-by-Step Solutions

What is the formula for the average power consumed in an AC circuit with a resistor? (2019)
  • Step 1: Understand that power in an electrical circuit is the rate at which energy is used or consumed.
  • Step 2: In an AC circuit with a resistor, the average power can be calculated using different formulas.
  • Step 3: The first formula is P = VI, where P is power, V is voltage, and I is current.
  • Step 4: The second formula is P = V²/R, where V is the voltage across the resistor and R is the resistance.
  • Step 5: The third formula is P = I²R, where I is the current flowing through the resistor and R is the resistance.
  • Step 6: Choose any of these formulas based on the information you have (voltage, current, or resistance) to calculate the average power.
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