At time t = 0 magnetic field of 1000   G a u s s is passing perpendicularly through the area defined by…

At time $t=0$ magnetic field of $1000 \mathrm{G}\mathrm{a}\mathrm{u}\mathrm{s}\mathrm{s}$ is passing perpendicularly through the area defined by the closed loop shown in the figure. If the magnetic field reduces linearly to $500 \mathrm{G}\mathrm{a}\mathrm{u}\mathrm{s}\mathrm{s},$ in the next $5\mathrm{s},$ then induced $\mathrm{E}\mathrm{M}\mathrm{F}$ in the loop is:

1. $56\mathrm{\mu }\mathrm{V}$
2. $28\mathrm{\mu }\mathrm{V}$
3. $48\mathrm{\mu }\mathrm{V}$
4. $36\mathrm{\mu }\mathrm{V}$

Solution

Asked in: JEE Main 2020 (08 Jan Shift 1)

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