Amateur Extra › E5 Electrical Principles › E5A10
E5A10
What is the resonant frequency of an RLC circuit if R is 33 ohms, L is 50 microhenries, and C is 10 picofarads?
Pick an answer to check it.
Answer: A. 7.12 MHz
f = 1 / (2 pi sqrt(LC)) = 1 / (2 x 3.1416 x sqrt(50e-6 x 10e-12)) = 1 / (2 x 3.1416 x 2.236e-8) = 7.12 MHz.
Tip: f = 1 / (2 pi sqrt(LC)).