1

JEE Main 2017 (Offline)

MCQ (Single Correct Answer)

+4

-1

In a coil of resistance 100 $$\Omega $$, a current is induced by changing
the magnetic flux through it as shown in the figure. The
magnitude of change in flux through the coil is:

2

JEE Main 2016 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

+4

-1

A conducting metal circular-wire-loop of radius r is placed perpendicular to a
magnetic field which varies with time as

B = B

B = B

_{0}e$${^{{{ - t} \over r}}}$$ , where B_{0}and $$\tau $$ are constants, at time t = 0. If the resistance of the loop is R then the heat generated in the loop after a long time (t $$ \to $$ $$\infty $$) is :3

JEE Main 2016 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

+4

-1

Consider a thin metallic sheet perpendicular to the plane of the paper
moving with speed

*‘v’*in a uniform magnetic field B going into the plane of the paper (See figure). If charge densities $$\sigma $$_{1}and $$\sigma $$_{2}are induced on the left and right surfaces, respectively, of the sheet then (ignore fringe effects) :4

JEE Main 2015 (Offline)

MCQ (Single Correct Answer)

+4

-1

Two coaxial solenoids of different radius carry current $$I$$ in the same direction. $$\overrightarrow {{F_1}} $$ be the magnetic force on the inner solenoid due to the outer one and $$\overrightarrow {{F_2}} $$ be the magnetic force on the outer solenoid due to the inner one. Then :

Questions Asked from Electromagnetic Induction (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

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