Try the fastest way to create flashcards
Question

What is the average value of current over one cycle of an ac signal? Why, then, is a resistor heated by an ac current?

Solution

Verified
Answered 2 years ago
Answered 2 years ago
Step 1
1 of 3

In one cycle of an ac signal, the average current is equal to zero\textbf{zero}. This is because after one-half of a cycle, the current switches direction i.e. the values of the current past the half-cycle ``cancel" out the values of the current before the half-cycle. In general, any sinusoidal function (of which the ac signal is an example) has an average value of zero in an entire cycle.

Create a free account to view solutions

Create a free account to view solutions

Recommended textbook solutions

Holt Physics 6th Edition by Jerry S. Faughn, Serway

Holt Physics

6th EditionISBN: 9780030735486 (1 more)Jerry S. Faughn, Serway
2,830 solutions
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics 4th Edition by Randall D. Knight

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

4th EditionISBN: 9780133942651 (8 more)Randall D. Knight
3,508 solutions
Mathematical Methods in the Physical Sciences 3rd Edition by Mary L. Boas

Mathematical Methods in the Physical Sciences

3rd EditionISBN: 9780471198260 (1 more)Mary L. Boas
3,355 solutions
Fundamentals of Physics 10th Edition by David Halliday, Jearl Walker, Robert Resnick

Fundamentals of Physics

10th EditionISBN: 9781118230718 (3 more)David Halliday, Jearl Walker, Robert Resnick
8,971 solutions

More related questions

1/4

1/7