1
JEE Main 2019 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
An alternating voltage v(t) = 220 sin 100 $$\pi $$t volt is applied to a purely resistance load of 50$$\Omega $$ . The time taken for the current to rise from half of the peak value to the peak value is :
A
5 ms
B
2.2 ms
C
3.3 ms
D
7.2 ms
2
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In the above circuit, C = $${{\sqrt 3 } \over 2}$$$$\mu $$F, R2 = 20 $$\Omega $$, L = $${{\sqrt 3 } \over {10}}$$ H and R1 = 10 $$\Omega $$. Current in L-R1 path is I1 and in C-R2 path it is I2 . The voltage of A.C. source is given by, V = 200 $${\sqrt 2 }$$ sin (100 t) volts . The phase difference between I1 and I2 is :

JEE Main 2019 (Online) 12th January Evening Slot Physics - Alternating Current Question 146 English
A
150o
B
90o
C
30o
D
0o
3
JEE Main 2019 (Online) 12th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In the figure shown, a circuit contains two identical resistors with resistance R = 5$$\Omega $$ and an inductance with L = 2mH. An ideal battery of 15 V is connected in the circuit. What will be the current through the battery long after the switch is closed ?

JEE Main 2019 (Online) 12th January Morning Slot Physics - Alternating Current Question 147 English
A
6 A
B
7.5 A
C
3 A
D
5.5 A
4
JEE Main 2019 (Online) 11th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In the circuit shown,

JEE Main 2019 (Online) 11th January Morning Slot Physics - Alternating Current Question 148 English
the switch S1 is closed at time t = 0 and the switch S2 is kept open. At some later time(t0), the switch S1 is opened and S2 is closed. The behavior of the current I as a function of time 't' is given by :
A
JEE Main 2019 (Online) 11th January Morning Slot Physics - Alternating Current Question 148 English Option 1
B
JEE Main 2019 (Online) 11th January Morning Slot Physics - Alternating Current Question 148 English Option 2
C
JEE Main 2019 (Online) 11th January Morning Slot Physics - Alternating Current Question 148 English Option 3
D
JEE Main 2019 (Online) 11th January Morning Slot Physics - Alternating Current Question 148 English Option 4
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