Question 347: AC fundamentals

Question

The reciprocal of the total effective resistance of LCR a.c. circuit is called

Accepted Answer

The total effective resistance of an LCR (inductor-capacitor-resistor) AC circuit is known as impedance, which is a complex quantity comprising the actual resistance and the reactances due to the inductance and capacitance. However, the reciprocal of impedance is called admittance. Admittance is a measure of how easily a circuit will allow electrical current to flow.
In mathematical terms, if the impedance $ Z $ is a complex number represented as :
$ Z = R + jX $
where $ R $ is the resistance, $ X $ is the reactance, and $ j $ is the imaginary unit.
The admittance $ Y $ is the reciprocal of the impedance :
$ Y = \frac{1}{Z} $
So the correct answer to the question is :
Option B :
admittance

Answer

impedance

Answer

admittance

Answer

resistance

Answer

inductive and capacitive reactance

AC fundamentals

The reciprocal of the total effective resistance of LCR a.c. circuit is called

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