Question

A series RCL circuit has an emf connected in series with a resistor (1260 ohm) inductor...

A series RCL circuit has an emf connected in series with a resistor (1260 ohm) inductor (61mH) and capacitor (3.4 uF). What frequency of the emf will maximize the current through the circuit?
A) 128 Hz
B) 352 Hz
C) 543 Hz
D) 932 Hz
E) 657 Hz
Science   Physics   
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Answer #1

The current is maximum when the circuit is in resonance. The resonance frequency is given by

Given L =61 mH and C = 3.4 x 10-6 F

= 2195.8 rad/s

= 2f then f = / 2

f = 350 Hz nearly

OPTION B

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