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What is the formula for calculating power in a DC circuit?

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Question: What is the formula for calculating power in a DC circuit?

Options:

  1. P = V / I
  2. P = I^2 * R
  3. P = V * I
  4. P = R / V

Correct Answer: P = V * I

Solution: 

The power (P) in a DC circuit can be calculated using the formula P = V * I, where V is voltage and I is current.

What is the formula for calculating power in a DC circuit?

Practice Questions

Q1
What is the formula for calculating power in a DC circuit?
  1. P = V / I
  2. P = I^2 * R
  3. P = V * I
  4. P = R / V

Questions & Step-by-Step Solutions

What is the formula for calculating power in a DC circuit?
  • Step 1: Identify the voltage (V) in the DC circuit. This is measured in volts (V).
  • Step 2: Identify the current (I) in the DC circuit. This is measured in amperes (A).
  • Step 3: Use the formula P = V * I to calculate power.
  • Step 4: Multiply the voltage (V) by the current (I) to get the power (P) in watts (W).
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