In a pure resistor, what is the phase angle between voltage and current, and what is the power factor?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Study for the NEIEP Magnetism and Electromagnetism (355) exam. Enhance your understanding with multiple choice questions, each equipped with hints and explanations. Prepare effectively for high performance on your exam!

Multiple Choice

In a pure resistor, what is the phase angle between voltage and current, and what is the power factor?

Explanation:
In a pure resistor, voltage and current rise and fall together with no delay between them. That means the phase angle between voltage and current is zero degrees. The power factor is the cosine of that angle, so PF = cos(0°) = 1. So voltage and current are in phase and the circuit has unity power factor. The other cases describe reactive elements where the phase shift is 90°, which would give a power factor of zero.

In a pure resistor, voltage and current rise and fall together with no delay between them. That means the phase angle between voltage and current is zero degrees. The power factor is the cosine of that angle, so PF = cos(0°) = 1. So voltage and current are in phase and the circuit has unity power factor. The other cases describe reactive elements where the phase shift is 90°, which would give a power factor of zero.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy