1
JEE Main 2021 (Online) 25th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
An LCR circuit contains resistance of 110$$\Omega$$ and a supply of 220 V at 300 rad/s angular frequency. If only capacitance is removed from the circuit, current lags behind the voltage by 45$$^\circ$$. If on the other hand, only inductor is removed the current leads by 45$$^\circ$$ with the applied voltage. The rms current flowing in the circuit will be :
A
1 A
B
2.5 A
C
2 A
D
1.5 A
2
JEE Main 2021 (Online) 25th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Match List I with List II.

List I List II
(a) Rectifier (i) Used either for stepping up or stepping down the a.c. voltage
(b) Stabilizer (ii) Used to convert a.c. voltage into d.c. voltage
(c) Transformer (iii) Used to remove any ripple in the rectified output voltage
(d) Filter (iv) Used for constant output voltage even when the input voltage or load current change


Choose the correct answer from the options given below :
A
(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
B
(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
C
(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
D
(a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
3
JEE Main 2021 (Online) 25th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The angular frequency of alternating current in a L-C-R circuit is 100 rad/s. The components connected are shown in the figure. Find the value of inductance of the coil and capacity of condenser.

JEE Main 2021 (Online) 25th February Morning Shift Physics - Alternating Current Question 106 English
A
0.8 H and 150 $$\mu$$F
B
0.8 H and 250 $$\mu$$F
C
1.33 H and 150 $$\mu$$F
D
1.33 H and 250 $$\mu$$F
4
JEE Main 2021 (Online) 25th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The current (i) at time t = 0 and t = $$\infty $$ respectively for the given circuit is :

JEE Main 2021 (Online) 25th February Morning Shift Physics - Alternating Current Question 104 English
A
$${{18E} \over {55}},{{5E} \over {18}}$$
B
$${{5E} \over {18}},{{18E} \over {55}}$$
C
$${{5E} \over {18}},{{10E} \over {33}}$$
D
$${{10E} \over {33}},{{5E} \over {18}}$$
JEE Main Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12