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View Full Version : help me plz! [Inductance]


physicsroy
Nov26-08, 07:24 AM
1. The problem statement, all variables and given/known data
an experiment to determine the inductance and internal resitance of an inductor in a series LCR circuit.
I am proved with an a.c. power supply, an inductor, a capacitor substitution box, a resistor and an a.c. voltmeter


2. Relevant equations
how can i find the resonace frequency, inductance and the internal resistance of the inductor?


3. The attempt at a solution
I was suggested to use graphical method to find out the resonance frequency
but i don't know how can i do it.

ak1948
Nov26-08, 08:13 AM
At resonance the sum of the inductive and capacitive impedances = 0.

This occurs at the frequency f = 2pi sqrt(1/LC).