Electricity and Magnetism > AC Circuits
DCS# 5L20.20
RESONANCE IN LRC SERIES CIRCUIT
APPARATUS
audio generator
107-01-A
500 - 6-8 ohm audio transformer
214-01-D
60 mH inductor
214-01-D
1 uF capacitor
101-09-G4
decade resistor
214-01-A
oscilloscope with camera
202
DESCRIPTION
Vary the frequency to show that the amplitude of V
R
(proportional to the current) peaks at the resonance frequency. Observe the difference in sharpness of the peak for different values of R.
NOTES
f = [2
π
√
(LC)]
-1
= 650 Hz
