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13 September, 00:49

An alternating current is set up in an LRC circuit.

For which of the following circuit elements are the current and voltage in phase?

A) inductor only

B) resistor only

C) capacitor only

D) resistor and capacitor only

E) inductor, resistor, and capacitor

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Answers (1)
  1. 13 September, 02:49
    0
    (B) Resistor only

    Explanation:

    Alternating Current: These are currents that changes periodically with time.

    An LRC Ac circuit is an AC circuit that contains a Resistor, a capacitor and an inductor, connected in series.

    In a purely resistive circuit, current and voltage are in phase.

    In a purely capacitive circuit, the current leads the voltage by π/2

    In a purely inductive circuit, the current lags the voltage by π/2.

    Therefore when a alternating current is set up in LRC circuit, in the resistor, the current and the voltage are in phase.

    The right option is (B) Resistor only.
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