Electromagnetic Induction PYQs - Last 5 Years
JEE Main / Physics / Electricity / 83 recent questions
PhysicsElectricity2022-2026
Practice 83 JEE Main Physics questions from Electromagnetic Induction. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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Last 5 Years Electromagnetic Induction Questions
Showing 33 of 83 filtered questions.
1Electromagnetic Induction
As per the given figure, if \(\frac{\mathrm{dI}}{\mathrm{dt}}=-1 \mathrm{~A} / s\) then the value of \(\mathrm{V}_{\mathrm{AB}}\) at this instant will be ____________ \(\mathrm{V}\).
INTEGER+4 / -12023
2Electromagnetic Induction
A certain elastic conducting material is stretched into a circular loop. It is placed with its plane perpendicular to a uniform magnetic field B = 0.8 T. When released the radius of the loop starts shrinking at a constant rate of 2 cms$$^{...
INTEGER+4 / -12023
3Electromagnetic Induction
Find the mutual inductance in the arrangement, when a small circular loop of wire of radius '\(R\)' is placed inside a large square loop of wire of side \(L\) \((L \gg R)\). The loops are coplanar and their centres coincide :
MCQ+4 / -12023
4Electromagnetic Induction
A square loop of area 25 cm\(^2\) has a resistance of 10 \(\Omega\). The loop is placed in uniform magnetic field of magnitude 40.0 T. The plane of loop is perpendicular to the magnetic field. The work done in pulling the loop out of the ma...
MCQ+4 / -12023
5Electromagnetic Induction
A wire of length 1m moving with velocity 8 m/s at right angles to a magnetic field of 2T. The magnitude of induced emf, between the ends of wire will be __________.
MCQ+4 / -12023
6Electromagnetic Induction
A conducting circular loop of radius \(\frac{10}{\sqrt\pi}\) cm is placed perpendicular to a uniform magnetic field of 0.5 T. The magnetic field is decreased to zero in 0.5 s at a steady rate. The induced emf in the circular loop at 0.25 s ...
MCQ+4 / -12023
7Electromagnetic Induction
Three identical resistors with resistance R = 12\(\Omega\) and two identical inductors with self inductance L = 5 mH are connected to an ideal battery with emf of 12 V as shown in figure. The current through the battery long after the switc...
INTEGER+4 / -12023
8Electromagnetic Induction
A metallic rod of length 'L' is rotated with an angular speed of '\(\omega\)' normal to a uniform magnetic field 'B' about an axis passing through one end of rod as shown in figure. The induced emf will be :
MCQ+4 / -12023
9Electromagnetic Induction
A coil is placed in magnetic field such that plane of coil is perpendicular to the direction of magnetic field. The magnetic flux through a coil can be changed :
A. By changing the magnitude of the magnetic field within the coil.
B. By chan...
A. By changing the magnitude of the magnetic field within the coil.
B. By chan...
MCQ+4 / -12023
10Electromagnetic Induction
A $20 \mathrm{~cm}$ long metallic rod is rotated with $210~ \mathrm{rpm}$ about an axis normal to the rod passing through its one end. The other end of the rod is in contact with a circular metallic ring. A constant and uniform magnetic fie...
INTEGER+4 / -12023
11Electromagnetic Induction
$12 \mathrm{~V}$ battery connected to a coil of resistance $6 \Omega$ through a switch, drives a constant current in the circuit. The switch is opened in $1 \mathrm{~ms}$. The emf induced across the coil is $20 \mathrm{~V}$. The inductance ...
MCQ+4 / -12023
12Electromagnetic Induction
An insulated copper wire of 100 turns is wrapped around a wooden cylindrical core of the cross-sectional area \(24 \mathrm{~cm}^{2}\). The two ends of the wire are connected to a resistor. The total resistance in the circuit is $$12 ~\Omega...
INTEGER+4 / -12023
13Electromagnetic Induction
A conducting circular loop is placed in a uniform magnetic field of \(0.4 \mathrm{~T}\) with its plane perpendicular to the field. Somehow, the radius of the loop starts expanding at a constant rate of \(1 \mathrm{~mm} / \mathrm{s}\). The m...
INTEGER+4 / -12023
14Electromagnetic Induction
The magnetic field B crossing normally a square metallic plate of area \(4 \mathrm{~m}^{2}\) is changing with time as shown in figure. The magnitude of induced emf in the plate during \(\mathrm{t}=2 s\) to \(\mathrm{t}=4 s\), is __________ ...
INTEGER+4 / -12023
15Electromagnetic Induction
A metallic cube of side \(15 \mathrm{~cm}\) moving along \(y\)-axis at a uniform velocity of \(2 \mathrm{~ms}^{-1}\). In a region of uniform magnetic field of magnitude \(0.5 \mathrm{~T}\) directed along \(z\)-axis. In equilibrium the poten...
INTEGER+4 / -12023
16Electromagnetic Induction
Given below are two statements: one is labelled as Assertion \(\mathbf{A}\) and the other is labelled as Reason \(\mathbf{R}\)
Assertion A: A bar magnet dropped through a metallic cylindrical pipe takes more time to come down compared to a ...
Assertion A: A bar magnet dropped through a metallic cylindrical pipe takes more time to come down compared to a ...
MCQ+4 / -12023
17Electromagnetic Induction
A 1 m long metal rod XY completes the circuit as shown in figure. The plane of the circuit is perpendicular to the magnetic field of flux density 0.15 T. If the resistance of the circuit is 5\(\Omega\), the force needed to move the rod in d...
INTEGER+4 / -12023
18Electromagnetic Induction
Given below are two statements:
Statement I : If the number of turns in the coil of a moving coil galvanometer is doubled then the current sensitivity becomes double.
Statement II : Increasing current sensitivity of a moving coil galvanomet...
Statement I : If the number of turns in the coil of a moving coil galvanometer is doubled then the current sensitivity becomes double.
Statement II : Increasing current sensitivity of a moving coil galvanomet...
MCQ+4 / -12023
19Electromagnetic Induction
A square loop of side \(2.0 \mathrm{~cm}\) is placed inside a long solenoid that has 50 turns per centimetre and carries a sinusoidally varying current of amplitude \(2.5 \mathrm{~A}\) and angular frequency $$700 ~\mathrm{rad} ~\mathrm{s}^{...
INTEGER+4 / -12023
20Electromagnetic Induction
A coil is placed in a time varying magnetic field. If the number of turns in the coil were to be halved and the radius of wire doubled, the electrical power dissipated due to the current induced in the coil would be :
(Assume the coil to be...
(Assume the coil to be...
MCQ+4 / -12022
21Electromagnetic Induction
For the given circuit the current through battery of 6 V just after closing the switch 'S' will be _________ A.
INTEGER+4 / -12022
22Electromagnetic Induction
A metallic rod of length 20 cm is placed in North-South direction and is moved at a constant speed of 20 m/s towards East. The horizontal component of the Earth's magnetic field at that place is 4 \(\times\) 10\(-\)3 T and the angle of dip ...
INTEGER+4 / -12022
23Electromagnetic Induction
A conducting circular loop is placed in \(X-Y\) plane in presence of magnetic field \(\overrightarrow{\mathrm{B}}=\left(3 \mathrm{t}^{3} \,\hat{j}+3 \mathrm{t}^{2}\, \hat{k}\right)\) in SI unit. If the radius of the loop is $$1 \mathrm{~m}$...
INTEGER+4 / -12022
24Electromagnetic Induction
A 10 \(\Omega\), 20 mH coil carrying constant current is connected to a battery of 20 V through a switch. Now after switch is opened current becomes zero in 100 \(\mu\)s. The average e.m.f. induced in the coil is ____________ V.
INTEGER+4 / -12022
25Electromagnetic Induction
The magnetic flux through a coil perpendicular to its plane is varying according to the relation \(\phi = (5{t^3} + 4{t^2} + 2t - 5)\) Weber. If the resistance of the coil is 5 ohm, then the induced current through the coil at t = 2 s will...
MCQ+4 / -12022
26Electromagnetic Induction
A metallic conductor of length 1 m rotates in a vertical plane parallel to east-west direction about one of its end with angular velocity 5 rad s\(-\)1. If the horizontal component of earth's magnetic field is 0.2 \(\times\) 10\(-\)4 T, the...
MCQ+4 / -12022
27Electromagnetic Induction
Two coils of self inductance L1 and L2 are connected in series combination having mutual inductance of the coils as M. The equivalent self inductance of the combination will be :
MCQ+4 / -12022
28Electromagnetic Induction
In a coil of resistance \(8 \,\Omega\), the magnetic flux due to an external magnetic field varies with time as \(\phi=\frac{2}{3}\left(9-t^{2}\right)\). The value of total heat produced in the coil, till the flux becomes zero, will be ____...
INTEGER+4 / -12022
29Electromagnetic Induction
The current in a coil of self inductance 2.0 H is increasing according to I = 2 sin(t2) A. The amount of energy spent during the period when current changes from 0 to 2 A is ____________ J.
INTEGER+4 / -12022
30Electromagnetic Induction
A small square loop of wire of side \(l\) is placed inside a large square loop of wire \(\mathrm{L}(\mathrm{L}>>l)\). Both loops are coplanar and their centres coincide at point \(\mathrm{O}\) as shown in figure. The mutual inductance of th...
MCQ+4 / -12022
31Electromagnetic Induction
Magnetic flux (in weber) in a closed circuit of resistance 20 \(\Omega\) varies with time t(s) at \(\phi\) = 8t2 \(-\) 9t + 5. The magnitude of the induced current at t = 0.25 s will be ____________ mA.
INTEGER+4 / -12022
32Electromagnetic Induction
The electric current in a circular coil of 2 turns produces a magnetic induction B1 at its centre. The coil is unwound and in rewound into a circular coil of 5 tuns and the same current produces a magnetic induction B2 at its centre. The ra...
MCQ+4 / -12022
33Electromagnetic Induction
A circular coil of 1000 turns each with area 1m2 is rotated about its vertical diameter at the rate of one revolution per second in a uniform horizontal magnetic field of 0.07T. The maximum voltage generation will be ___________ V.
INTEGER+4 / -12022