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Pregunta 211

What is reactance?

  1. Opposition to the flow of direct current caused by resistance
  2. Opposition to the flow of alternating current caused by capacitance or inductanceRespuesta correcta
  3. Reinforcement of the flow of direct current caused by resistance
  4. Reinforcement of the flow of alternating current caused by capacitance or inductance

Explicación

Reactance is the frequency-dependent opposition that inductance and capacitance present to alternating current; it opposes current rather than reinforcing it, which rules out the two reinforcement choices. Opposition caused by resistance is resistance, not reactance.

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Pregunta 211: What is reactance? · FCC General Class (Element 3) · Questena