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What is the formula for calculating electric power? (2023)

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Question: What is the formula for calculating electric power? (2023)

Options:

  1. P = IV
  2. P = I^2R
  3. P = V^2/R
  4. All of the above

Correct Answer: All of the above

Exam Year: 2023

Solution: 

The electric power can be calculated using multiple formulas: P = IV (power = current × voltage), P = I^2R (power = current squared × resistance), and P = V^2/R (power = voltage squared / resistance).

What is the formula for calculating electric power? (2023)

Practice Questions

Q1
What is the formula for calculating electric power? (2023)
  1. P = IV
  2. P = I^2R
  3. P = V^2/R
  4. All of the above

Questions & Step-by-Step Solutions

What is the formula for calculating electric power? (2023)
  • Step 1: Understand that electric power is the rate at which electrical energy is used or produced.
  • Step 2: Learn the basic formula for electric power, which is P = IV, where P is power, I is current, and V is voltage.
  • Step 3: Know that you can also calculate power using the current and resistance with the formula P = I^2R.
  • Step 4: Alternatively, you can calculate power using voltage and resistance with the formula P = V^2/R.
  • Step 5: Remember that these formulas can be used depending on the information you have (current, voltage, or resistance).
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