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1
JEE Main 2021 (Online) 25th February Morning Slot
MCQ (Single Correct Answer)
+4
-1
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 Slot Physics - Alternating Current and Electromagnetic Induction Question 130 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
2
JEE Main 2021 (Online) 25th February Morning Slot
MCQ (Single Correct Answer)
+4
-1
The current (i) at time t = 0 and t = $$\infty $$ respectively for the given circuit is :

JEE Main 2021 (Online) 25th February Morning Slot Physics - Alternating Current and Electromagnetic Induction Question 127 English
A
$${{18E} \over {55}},{{5E} \over {18}}$$
B
$${{5E} \over {18}},{{18E} \over {55}}$$
C
$${{5E} \over {18}},{{10E} \over {33}}$$
D
$${{10E} \over {33}},{{5E} \over {18}}$$
3
JEE Main 2021 (Online) 24th February Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Figure shows a circuit that contains four identical resistors with resistance R = 2.0$$\Omega$$, two identical inductors with inductance L = 2.0 mH and an ideal battery with emf E = 9V. The current 'i' just after the switch 'S' is closed will be :

JEE Main 2021 (Online) 24th February Evening Slot Physics - Alternating Current and Electromagnetic Induction Question 129 English
A
3.0 A
B
3.37 A
C
9 A
D
2.25 A
4
JEE Main 2020 (Online) 6th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
An AC circuit has R= 100 $$\Omega $$, C = 2 $$\mu $$F and L = 80 mH, connected in series. The quality factor of the circuit is :
A
20
B
2
C
0.5
D
400
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