1
JEE Main 2021 (Online) 16th March Morning Shift
+4
-1
An RC circuit as shown in the figure is driven by a AC source generating a square wave. The output wave pattern monitored by CRO would look close to :

A
B
C
D
2
JEE Main 2021 (Online) 26th February Evening Shift
+4
-1
Find the peak current and resonant frequency of the following circuit (as shown in figure).

A
2 A and 100 Hz
B
2 A and 50 Hz
C
0.2 A and 100 Hz
D
0.2 A and 50 Hz
3
JEE Main 2021 (Online) 26th February Morning Shift
+4
-1
An alternating current is given by the equation i = i1 sin $$\omega$$t + i2 cos $$\omega$$t. The rms current will be :
A
$${1 \over {\sqrt 2 }}{\left( {i_1^2 + i_2^2} \right)^{{1 \over 2}}}$$
B
$${1 \over {\sqrt 2 }}({i_1} + {i_2})$$
C
$${1 \over {\sqrt 2 }}{({i_1} + {i_2})^2}$$
D
$${1 \over 2}{\left( {i_1^2 + i_2^2} \right)^{{1 \over 2}}}$$
4
JEE Main 2021 (Online) 25th February Evening Shift
+4
-1
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
JEE Main Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Coordinate Geometry
Calculus
EXAM MAP
Joint Entrance Examination