JEE Main 2022 (Online) 24th June Morning Shift | Alternating Current Question 83 | Physics

A resistance of 40 $$\Omega$$ is connected to a source of alternating current rated 220 V, 50 Hz. Find the time taken by the current to change from its maximum value to the rms value :

2.5 ms

1.25 ms

2.5 s

0.25 s

JEE Main 2021 (Online) 1st September Evening Shift

MCQ (Single Correct Answer)

-1

For the given circuit the current i through the battery when the key in closed and the steady state has been reached is __________.

JEE Main 2021 (Online) 1st September Evening Shift Physics - Alternating Current Question 86 English

JEE Main 2021 (Online) 1st September Evening Shift Physics - Alternating Current Question 86 English

6 A

25 A

10 A

0 A

JEE Main 2021 (Online) 31st August Morning Shift

MCQ (Single Correct Answer)

-1

In an ac circuit, an inductor, a capacitor and a resistor are connected in series with X_L = R = X_C. Impedance of this circuit is :

2R²

Zero

R$$\sqrt 2 $$

JEE Main 2021 (Online) 26th August Evening Shift

MCQ (Single Correct Answer)

-1

In the given circuit the AC source has $$\omega$$ = 100 rad s^-1. Considering the inductor and capacitor to be ideal, what will be the current I flowing through the circuit?

JEE Main 2021 (Online) 26th August Evening Shift Physics - Alternating Current Question 90 English