What is the formula for calculating power in an AC circuit with a phase angle?

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Question: What is the formula for calculating power in an AC circuit with a phase angle?

Options:

Correct Answer: P = V * I * cos(θ)

Solution:

The power in an AC circuit is calculated using P = V * I * cos(θ), where θ is the phase angle between the voltage and current.

What is the formula for calculating power in an AC circuit with a phase angle?

What is the formula for calculating power in an AC circuit with a phase angle?

Step 1: Identify the voltage (V) in the AC circuit.
Step 2: Identify the current (I) flowing through the circuit.
Step 3: Determine the phase angle (θ) between the voltage and current. This angle is usually given in degrees or radians.
Step 4: Calculate the cosine of the phase angle (cos(θ)). You can use a calculator for this step.
Step 5: Multiply the voltage (V) by the current (I) and then by the cosine of the phase angle (cos(θ)).
Step 6: The result from Step 5 is the power (P) in the AC circuit.

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