answersLogoWhite

0

Does the resistance depend on the frequency?

Updated: 11/1/2022
User Avatar

ShaunMarshgp7659

Lvl 1
8y ago

Best Answer

Yes. The resistance does depend on frequency. The reason is 'skin effect'.

When an alternating current is passed through a conductor only a small portion of the conductor, usually called the skin depth carries the current. The value of skin depth is inversely proportional to frequency. As the frequency is increased, the skin depth decreases. But the value of ac resistance is directly proportional to frequency, or in other words, inversely proportional to skin depth. Thus, at higher frequencies, ac resistance is higher. This is the reason why we multiply the dc resistance by an empirical value 1.2 or 1.3 to calculate its ac equivalent.

User Avatar

Wiki User

8y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Does the resistance depend on the frequency?
Write your answer...
Submit
Still have questions?
magnify glass
imp