If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Course: Class 12 Physics (India) > Unit 7

Lesson 6: LCR series circuit (resonance)
Science
Class 12 Physics (India)
Alternating current
LCR series circuit (resonance)
© 2024 Khan AcademyTerms of usePrivacy PolicyCookie Notice

Series LCR circuits: resonance frequency

Google Classroom

Problem

An AC source pushes maximum current through a series LCR circuit with the following parameters:
  • inductance, L=4 mH,
  • capacitance, C=160 μF,
  • resistance, R=90 Ω.
What is the frequency of the AC source?
Note: Round the answer to the nearest integer.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
Hz