When voltage and current developed in an AC...

Question 1 / 270705eccefa3bacbc34ba4d480e0

Question 1 of 270705eccefa3bacbc34ba4d480e0

When voltage and current developed in an AC circuit reach their peak values at the same time, how is the power factor characterized?

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Question 1 of 27070

When voltage and current developed in an AC circuit reach their peak values at the same time, how is the power factor characterized?

🔍 Key Concepts

• Power factor in AC circuits relates to the phase relationship between voltage and current • When voltage and current peaks occur at the same instant, their phase angle difference is important • The terms leading and lagging describe whether current reaches its peak before or after the voltage

💭 Think About

• Think about what it means, in terms of angle, if two sinusoidal waves reach their maximum at exactly the same time • How does the cosine of the phase angle between voltage and current relate to the numerical value of power factor? • In which situation would real power transfer be greatest: when voltage/current are in step, or when one is ahead/behind the other?

✅ Before You Answer

• Confirm what power factor equals when the phase angle between voltage and current is zero degrees • Review whether leading/lagging describe timing or magnitude of the waves • Think about whether "maximum" or "minimum" refers to the numeric value of power factor (between 0 and 1)

Question 1 of 27070

When voltage and current developed in an AC circuit reach their peak values at the same time, how is the power factor characterized?

lagging

leading

maximum

minimum