What does the power factor equal in an R-L...

What does the power factor equal in an R-L...

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Question 1 of 20r6NkzGFOEFX2pjH1oUwd

What does the power factor equal in an R-L circuit having a 60 degree phase angle between the voltage and the current?

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r6NkzGFOEFX2pjH1oUwd

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What does the power factor equal in an R-L circuit having a 60 degree phase angle between the voltage and the current?

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🔍 Key Concepts

• Power factor definition in AC circuits • Relationship between phase angle (φ) and power factor in an R-L (resistive–inductive) circuit • Using trigonometric functions (sine, cosine) to relate angles and ratios

💭 Think About

• In an R-L circuit, when current lags voltage by a phase angle φ, which trigonometric function of φ represents the power factor? • For a 60° phase angle, what is the numerical value of that trigonometric function (to three decimals)? • Compare that numerical value with each of the multiple-choice options to see which one matches best.

✅ Before You Answer

• Remember that power factor is always between 0 and 1 for normal R-L or R-C loads. • Confirm whether power factor is equal to cos φ or sin φ in AC power calculations. • Double-check the standard trig values for 30°, 45°, and 60° so you don’t mix them up.

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