# Alternating Current · Physics · WB JEE

Start Practice## MCQ (Single Correct Answer)

WB JEE 2024

In a series LCR circuit, the rms voltage across the resistor and the capacitor are $$30 \mathrm{~V}$$ and $$90 \mathrm{~V}$$ respectively. If the app...

WB JEE 2022

When an AC source of emf E with frequency $$\omega$$ = 100 Hz is connected across a circuit, the phase difference between E and current I in the circu...

WB JEE 2021

The rms value of potential difference V shown in the figure is...

WB JEE 2021

Consider a pure inductive AC circuit as shown in the figure. If the average power consumed is P, then...

WB JEE 2020

When a DC voltage is applied at the two ends of a circuit kept in a closed box, it is observed that the current gradually increases from zero to a cer...

WB JEE 2019

When a 60 mH inductor and a resistor are connected in series with an AC voltage source, the voltage leads the current by 60$$^\circ$$. If the inductor...

WB JEE 2019

A parallel plate capacitor in series with a resistance of 100$$\Omega $$, an inductor of 20 mH and an AC voltage source of variable frequency shows re...

WB JEE 2018

An alternating current is flowing through a series L-C-R circuit. It is found that the current reaches a value of 1 mA at both 200 Hz and 800 Hz frequ...

WB JEE 2017

When the frequency of the AC voltage applied to a series LCR circuit is gradually increased from a low value, the impedance of the circuit

## MCQ (More than One Correct Answer)

WB JEE 2024

The variation of impedance $$\mathrm{Z}$$ of a series $$\mathrm{L C R}$$ circuit with frequency of the source is shown in the figure. Which of the fo...

WB JEE 2020

A 400$$\Omega $$ resistor, a 250 mH inductor and a 2.5 $$\mu $$F capacitor are connected in series with an AC source of peak voltage 5 V and angular f...