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Alternating Current

JEE Main level, single correct, medium

77 of 190

Question 77 of 190

As per the given graph, choose the correct representation for curve $A$ and curve $B$
{Where ${X}_{C}=$ Reactance of pure capacitive circuit connected with A.C. source
${X}_{L}=$ Reactance of pure inductive circuit connected with A.C. source
$R=$ Impedance of pure resistive circuit connected with A.C. source
$Z=$ Impedance of the $LCR$ series circuit }

Show answer and solution

Answer: (D) $A={X}_{C},B={X}_{L}$

The formula to calculate the inductive reactance is

{X}_{L}=\omega L...\left(1\right)

The formula to calculate capacitive reactance is

{X}_{C}=\left(\dfrac{1}{\omega C}\right)...\left(2\right)

As can be seen from equation (1), the inductive reactance varies directly with the frequency and equation (2) indicates that capacitive reactance varies inversely with the frequency.
Hence, curve

A

represents the capacitive reactance and curve

B

represents the inductive reactance.

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JEE Main 2025 Apr 2 Shift 1 question paper

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