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Write the condition for .resonance. of s...

Write the condition for .resonance. of series LCR circuit.

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Current through a series LCR circuit will be in phase with voltage, when inductive reactance `(X_L)` =capacitive reactance `(X_C)`. The circuit in this case is said to be under resonance.
`Z=Z_"min"=R , I=I_"max"` .
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