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Answer :
Final answer:
At the point of resonance in a series LCR circuit, the inductive and capacitive reactances cancel each other out, leaving the impedance equal to the resistance alone.
Explanation:
True, in a series LCR (inductor-capacitor-resistor) circuit, at the point of resonance, the impedance is indeed equal to the ohmic resistance of the circuit. This occurs because at resonance, the inductive reactance (XL) and the capacitive reactance (XC) are equal in magnitude but opposite in phase, thus they cancel each other out. As a result, the only opposition to current flow in the circuit is provided by the resistor's resistance (R), and according to Ohm's law, the impedance (Z) of the circuit is equal to the resistance (R).
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