1
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
A transformer consisting of 300 turns in the
primary and 150 turns in the secondary gives
output power of 2.2 kW. If the current in the
secondary coil is 10A, then the input voltage
and current in the primary coil are :
2
JEE Main 2019 (Online) 8th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
A circuit connected to an ac source of emf
e = e0sin(100t) with t in seconds, gives a phase
difference of $$\pi $$/4 between the emf e and
current i. Which of the following circuits will
exhibit this ?
3
JEE Main 2019 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
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 :
4
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
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 137 English](https://imagex.cdn.examgoal.net/yqHnRVwUAcGd3oP64/atYXMsjq2p6JEN4dqZKecQBgdUTdZ/zMAPFW6dafK7nhmIPxIHQ5/image.png)
![JEE Main 2019 (Online) 12th January Evening Slot Physics - Alternating Current Question 137 English](https://imagex.cdn.examgoal.net/yqHnRVwUAcGd3oP64/atYXMsjq2p6JEN4dqZKecQBgdUTdZ/zMAPFW6dafK7nhmIPxIHQ5/image.png)
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