Mastering Physics Solutions Chapter 24 Alternating Current Circuits

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https://sites.google.com/site/aplustopperguide/mastering-physics-solutions-chapter-24-alternating-current-circuits

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http://aplustoppernotes.blogspot.com/2018/06/mastering-physics-solutions-chapter-24.html

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https://aplustoppernotes.wordpress.com/2018/06/18/mastering-physics-solutions-chapter-24-alternating-current-circuits/

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Chapter 24 Alternating Current Circuits Q.1CQ

How can the rms voltage of an ac circuit be nonzero when its average value is zero? Explain.

Solution:

For a complete cycle the voltage oscillates between positive and negative symmetrically. Therefore the sum of symmetric positive and negative values will become zero and therefore the average value of ac - voltage is zero for a complete cycle.

But when we calculate the rms value of ac - voltage we first calculate the square of the voltage Therefore whether the voltage is positive or negative its square is a positive Therefore the rms voltage of ac is always non zero.

Chapter 24 Alternating Current Circuits Q.1P

An ac generator produces a peak voltage of 55 V. What is the rms voltage of this generator?

Solution:

Mastering Physics Solutio...ernating Current Circuits