A uniform magnetic field is restricted within a region of radius, r . The magnetic field changes with time at a rate, d B → d t . Loop one of radius R r encloses the region, r and loop two of radius

Question

A uniform magnetic field is restricted within a region of radius, $r .$ The magnetic field changes with time at a rate, $\frac{d \vec{B}}{d t}$ . Loop one of radius $R > r$ encloses the region, $r$ and loop two of radius, $R$ is outside the region of magnetic field as shown in the figure below. Then the emf generated is

NEET 2016 (Phase 2)

TestHub · Accepted Answer

Magnetic flux linked with area of loop one is B π r 2 . So, emf in loop one is, - d B → d t π r 2 . Magnetic flux linked with area of loop two is zero. So, emf in loop two is equal to zero.

Physics - EMI/AC Question with Solution | TestHub

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