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## Magnetism

### Physics

#### Previous Years Questions

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The work done in bringing the dipole from infinity to a distance r from the center of the loop by the given process is p...
JEE Advanced 2021 Paper 2 Online
When the dipole m is placed at a distance r from the center of the loop (as shown in the figure), the current induced in...
JEE Advanced 2021 Paper 2 Online
A light disc made of aluminium (a nonmagnetic material) is kept horizontally and is free to rotate about its axis as sho...
JEE Advanced 2020 Paper 1 (Offline)
A circular coil of radius R and N turns has negligible resistance. As shown in the schematic figure, its two ends are co...
JEE Advanced 2020 Paper 1 (Offline)
A symmetric star shaped conducting wire loop is carrying a steady state current $${\rm I}$$ as shown in the figure. The ...
JEE Advanced 2017 Paper 2 Offline
In which case would the particle move in a straight line along the negative direction of $$y$$-axis (i.e., move along $$... JEE Advanced 2017 Paper 1 Offline In which case will the particle describe a helical path with axis along the positive$$z$$direction? JEE Advanced 2017 Paper 1 Offline In which case will the particle move in a straight line with constant velocity? JEE Advanced 2017 Paper 1 Offline Consider d >> a, and the loop is rotated about its diameter parallel to the wires by 30$$^\circ$$from the position show... JEE Advanced 2014 Paper 2 Offline When d$$\approx$$a but wires are not touching the loop, it is found that the net magnetic field on the axis of the loo... JEE Advanced 2014 Paper 2 Offline The change in the magnetic dipole moment associated with the orbit, at the end of the time interval of the magnetic fiel... JEE Advanced 2013 Paper 2 Offline The magnitude of the induced electric field in the orbit at any instant of time during the time interval of the magnetic... JEE Advanced 2013 Paper 2 Offline An infinite long hollow conducting cylinder with inner radius R/2 and outer radius R carries a uniform current density a... IIT-JEE 2012 Paper 2 Offline A loop carrying current$$l$$lies in the xy-plane as shown in the figure. The unit vector$$\widehat k$$is coming out ... IIT-JEE 2012 Paper 2 Offline A long insulated copper wire is closely wound as a spiral of N turns. The spiral has inner radius a and outer radius b. ... IIT-JEE 2011 Paper 2 Offline A superconductor has Tc(0) = 100 K. When a magnetic field of 7.5 T is applied, its Tc decreases to 75 K. For this materi... IIT-JEE 2010 Paper 1 Offline In the graph below, the resistance R of a superconductor is shown as a friction of its temperature T for two different m... IIT-JEE 2010 Paper 1 Offline A thin flexible wire of length L is connected to two adjacent fixed points and carries a current I in the clockwise dire... IIT-JEE 2010 Paper 1 Offline ## MCQ (More than One Correct Answer) More Two concentric circular loops, one of radius R and the other of radius 2R, lie in the xy-plane with the origin as their ... JEE Advanced 2021 Paper 2 Online A long straight wire carries a current, I = 2 ampere. A semi-circular conducting rod is placed beside it on two conducti... JEE Advanced 2021 Paper 1 Offline Two infinitely long straight wires lie in the$$xy$$-plane along the lines$$x = \pm R.$$The wire located at$$x = + ...
JEE Advanced 2018 Paper 1 Offline
A uniform magnetic field $$B$$ exist in the region between $$x=0$$ and $$x = {{3R} \over 2}$$ (region $$2$$ in the figur...
JEE Advanced 2017 Paper 2 Offline
In a thin rectangular metallic strip a constant current I flows along the positive x-direction, as shown in the figure. ...
JEE Advanced 2015 Paper 2 Offline
In a thin rectangular metallic strip a constant current I flows along the positive x-direction, as shown in the figure. ...
JEE Advanced 2015 Paper 2 Offline
A conductor (shown in the figure) carrying constant current I is kept in the x-y plane in a uniform magnetic field B. If...
JEE Advanced 2015 Paper 1 Offline
A particle of mass M and positive charge Q, moving with a constant velocity $${\overrightarrow u _1} = 4\widehat i$$ ms$... JEE Advanced 2013 Paper 1 Offline A steady current I flows along an infinitely long hollow cylindrical conductor of radius R. This cylinder is placed coax... JEE Advanced 2013 Paper 2 Offline Consider the motion of a positive point charge in a region, there are simultaneous uniform electric and magnetic fields ... IIT-JEE 2012 Paper 1 Offline An electron and a proton are moving on straight parallel paths with same velocity. They enter a semi-infinite region of ... IIT-JEE 2011 Paper 1 Offline ## Numerical More An $$\alpha$$-particle (mass 4 amu) and a singly charged sulphur ion (mass 32 amu) are initially at rest. They are accel... JEE Advanced 2021 Paper 1 Offline A moving coil galvanometer has $$50$$ turns and each turn has an area $$2 \times {10^{ - 4}}\,{m^2}.$$ The magnetic fiel... JEE Advanced 2018 Paper 2 Offline In the $$xy$$-plane, the region $$y &gt; 0$$ has a uniform magnetic field $${B_1}\widehat k$$ and the region$$y &lt; 0$...
JEE Advanced 2018 Paper 1 Offline
Two parallel wires in the plane of the paper are distance X0 apart. A point charge is moving with speed u between the wi...
JEE Advanced 2014 Paper 1 Offline
A cylinder cavity of diameter a exists inside a cylinder of diameter 2a as shown in the figure. Both the cylinder and th...
IIT-JEE 2012 Paper 1 Offline
A long circular tube of length 10 m and radius 0.3 m carries a current I along its curved surface as shown. A wire-loop ...
IIT-JEE 2011 Paper 1 Offline

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