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Electromagnetic Induction question

2016 · Q127
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Electromagnetic Induction question

2016 · Q127

NEETPhysicsElectromagnetic InductionMCQ+4 / −1
A uniform magnetic field is restricted within a region of rafius r. The magnetic field changes with time at a rate dB→dt{{d\overrightarrow B } \over {dt}}dtdB​. Loop 1 of radius R > r encloses the region r and loop 2 of radius R is outside the region of magnetic field as shown in the figure. Then the e.m.f. generated is

NEET 2016 Phase 2 Physics - Electromagnetic Induction Question 27 English
  1. A
    zero in loop 1 and zero in loop 2
  2. B
    −dB→dtπr2- {{d\overrightarrow B } \over {dt}}\pi {r^2}−dtdB​πr2 in loop 1 and −dB→dtπr2- {{d\overrightarrow B } \over {dt}}\pi {r^2}−dtdB​πr2 in loop 2
  3. C
    −dB→dtπR2- {{d\overrightarrow B } \over {dt}}\pi {R^2}−dtdB​πR2 in loop 1 and zero in loop 2
  4. D
    −dB→dtπr2- {{d\overrightarrow B } \over {dt}}\pi {r^2}−dtdB​πr2 in loop 1 and zero in loop 2
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