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What is the maximum current of and RLC circuit with R=1.2kΩ, C=0.3F, and L=600μHif the system...

What is the maximum current of and RLC circuit with R=1.2kΩ, C=0.3F, and L=600μHif the system is driven by an alternating voltage source with f=750Hz, and V=10Vpeak to peak amplitude? (give your answer in mA to the nearest 0.1 mA)

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Answer #1

First, we should check what is the natural frequency of the circuit. A circuit at resonance is the one which is operating in a frequency equal to the natural frequency. This happens when the phase between current and emf is zero.

At resonance

,

So, given frequency , and the circuit is not in resonance.

So, For an RLC series circuit, The Peak to peak current is given by

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