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## MCQ (More than One Correct Answer)

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As shown in figure, a rectangular loop of length 'a' and width 'b' and made of a conducting material of uniform cross-s...
WB JEE 2022
A small bar magnet of dipole moment M is moving with speed v along x-direction towards a small closed circular conductin...
WB JEE 2021
A charged particle moves with constant velocity in a region, where no effect of gravity is felt but an electrostatic fie...
WB JEE 2020
A metallic loop is placed in a uniform magnetic field B with the plane of the loop perpendicular to B. Under which condi...
WB JEE 2019
If $$\chi$$ stands for the magnetic susceptibility of a substance, $$\mu$$ for its magnetic permeability and $$\mu$$0 f...
WB JEE 2017
Two long parallel wires separated by 0.1 m carry currents of 1A and 2A, respectively in opposite directions. A third cur...
WB JEE 2017

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A horizontal semi-circular wire of radius r is connected to a battery through two similar springs X and Y to an electric...
WB JEE 2022
A straight wire is placed in a magnetic field that varies with distance x from origin as $$\overrightarrow B = {B_0}\le... WB JEE 2022 An electron revolves around the nucleus in a circular path with angular momentum$$\overrightarrow L $$. A uniform magne... WB JEE 2022 Two infinite line-charges parallel to each other are moving with a constant velocity v in the same direction as shown i... WB JEE 2022 For two types of magnetic materials A and B, variation of$$1\over\chi$$($$\chi$$: susceptibility) versus temperature ... WB JEE 2021 A thin charged rod is bent into the shape of a small circle of radius R, the charge per unit length of the rod being$$\...
WB JEE 2021
Consider two infinitely long wires parallel to Z-axis carrying same current I in the positive z-direction. One wire pass...
WB JEE 2021
As shown in the figure, a wire is bent to form a D-shaped closed loop, carrying current I, where the curved part is a se...
WB JEE 2020
As shown in the figure, a single conducting wire is bent to form a loop in the form of a circle of radius r concentrical...
WB JEE 2020
A particle with charge q moves with a velocity v in a direction perpendicular to the directions of uniform electric and ...
WB JEE 2019
A square conducting loop is placed near an infinitely long current carrying wire with one edge parallel to the wire as s...
WB JEE 2019
A current 'I' is flowing along an infinite, straight wire, in the positive Z-direction and the same current is flowing a...
WB JEE 2019
An electric current 'I' enters and leaves a uniform circular wire of radius r through diametrically opposite points. A p...
WB JEE 2019
To which of the following quantities, the radius of the circular path of a charged particle moving at right angles to a ...
WB JEE 2019
A light charged particle is revolving in a circle of radius r in electrostatic attraction of a static heavy particle wit...
WB JEE 2018
A circular loop of radius r of conducting wire connected with a voltage source of zero internal resistance produces a ma...
WB JEE 2018
A uniform current is flowing along the length of an infinite, straight, thin, hollow cylinder of radius R. The magnetic ...
WB JEE 2018
A proton of mass m moving with a speed v (&lt; &lt; c, velocity of light in vacuum) completes a circular orbit in time T...
WB JEE 2018
A particle with charge e and mass m, moving along the X-axis with a uniform speed u, enters a region where a uniform ele...
WB JEE 2017
A proton is moving with a uniform velocity of $${{{10}^6}}$$ ms$$-$$1 along the Y-axis, under the joint action of a magn...
WB JEE 2017
The magnets of two suspended coil galvanometers are of the same strength so that they produce identical uniform magnetic...
WB JEE 2017
The magnetic field due to a current in a straight wire segment of length L at a point on its perpendicular bisector at ...
WB JEE 2017

## Subjective

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What should be the resistance of an ideal ammeter and an ideal voltmeter?
WB JEE 2008

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