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Pregunta 221

What occurs in an LC circuit at resonance?

  1. Current and voltage are equal
  2. Resistance is cancelled
  3. The circuit radiates all its energy in the form of radio waves
  4. Inductive reactance and capacitive reactance cancelRespuesta correcta

Explicación

At resonance the inductive and capacitive reactances are equal in magnitude but opposite in sign, so their effects cancel and the circuit looks purely resistive. Resistance itself is not cancelled and no energy needs to be radiated for resonance to occur.

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Pregunta 221: What occurs in an LC circuit at resonance? · FCC General Class (Element 3) · Questena