Circuit Nature at High Frequencies and Susceptance – Rankers Physics

LR, RC and LCR Circuits: Practice Problem & Solution

Assertion (A): At frequency greater than resonant frequency, circuit is inductive in nature. Reason (R): Reciprocal of reactance is called susceptance.  
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Solution Explained:

To solve this problem, we apply the core principles of LR, RC and LCR Circuits. Understanding the underlying formula is key to arriving at the correct answer below:

For frequencies greater than resonant frequency, inductive reactance \(X_L = \omega L\) becomes greater than capacitive reactance \(X_C = 1/(\omega C)\), making the circuit inductive. The reciprocal of reactance is defined as susceptance. Both statements are true, but R does not explain A.

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