Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 202131 AugustEvening Shift
Exam
JEE Main
Year
2021
Date
31 August
Shift
Evening Shift
Subject
Physics
Chapter
Alternating Current

JEE Main 2021 · 31 August · Evening Shift · Physics · Alternating Current

At very high frequencies, the effective impedance of the given...

At very high frequencies, the effective impedance of the given circuit will be _________Ω.Ω .
At very high frequencies, the effective impedance of the given circuit will be _________ Ω .

Correct answer

0

Step-by-step solution

For ω→∞\omega \to \infty
1\omegaC→0⇒\dfrac{1}{\omegaC} \to 0 ⇒ capacitance acts as short circuit
& \omegaL→∞\omegaL \to \infty Inductance acts as open circuit
At very high frequencies, the effective impedance of the given circuit will be _________ Ω .
Z=1+2×22+2=2ΩZ = 1 + \dfrac{2 \times 2}{2 + 2} = 2Ω
Practice Alternating Current on Quantrex Academy →

More from Alternating Current

Consider a circuit consisting of a capacitor of capacitance C and a coil with N turns per… JEE Advanced 2026A LCR series circuit driven with E_ rms = 90 V at frequency f_d = 30 Hz has resistance R… JEE Main 2026A series LCR circuit with R = 20\ Ω , L = 1.6 H and C = 40\ is connected to a variable… JEE Main 2026An a.c. source of angular frequency ω is connected across a resistor R and a capacitor C… JEE Main 2026An inductor of 10 mH, capacitor of 0.1\ μ F and a resistor of 100\ Ω are connected in… JEE Main 2026The figure given below shows an LCR series circuit with two switches S_1 and S_2 . When… JEE Main 2026An inductor stores 16 J of magnetic field energy and dissipates 32 W of thermal energy… JEE Main 2026The electric current in the circuit is given as i=i_ o (t / T) . The r.m.s current for… JEE Main 2026 Full Alternating Current list All JEE Main PYQs