What is the average power consumed in an AC circuit with a power factor of 1? (2

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Question: What is the average power consumed in an AC circuit with a power factor of 1? (2019)

Options:

Correct Answer: Maximum power

Exam Year: 2019

Solution:

When the power factor is 1, the average power consumed is maximum and is given by P = V_rms × I_rms.

What is the average power consumed in an AC circuit with a power factor of 1? (2019)

What is the average power consumed in an AC circuit with a power factor of 1? (2019)

Step 1: Understand that in an AC circuit, power can be measured in terms of voltage and current.
Step 2: Know that 'V_rms' stands for the root mean square voltage, which is the effective voltage in the circuit.
Step 3: Know that 'I_rms' stands for the root mean square current, which is the effective current in the circuit.
Step 4: Recognize that the power factor is a measure of how effectively the current is being converted into useful work, with a power factor of 1 meaning all the power is being used effectively.
Step 5: Use the formula P = V_rms × I_rms to calculate the average power consumed when the power factor is 1.

Power Factor – The power factor is a measure of how effectively electrical power is being converted into useful work output, with a value of 1 indicating maximum efficiency.
Average Power in AC Circuits – In AC circuits, average power can be calculated using the formula P = V_rms × I_rms when the power factor is 1.