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Electromagnetic Induction question

2018 · 15 Apr · Shift 2 · Q47
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  5. /2018 · 15 Apr · Shift 2 · Q47

Electromagnetic Induction question

2018 · 15 Apr · Shift 2 · Q47

JEE MainPhysicsElectromagnetic InductionMCQ+4 / −1
At the center of a fixed large circular coil of radius R, a much smaller circular coil of radius r is placed. The two coils are concentric and are in the same plane. The larger coil carries a current I. The smaller coil is set to rotate with a constant angular velocity ω\omegaω about an axis along their common diameter. Calculate the emf induced in their smaller coil after a time t of its start of rotation.
  1. A
    μoI2 Rωπ{{{\mu _o}{\rm I}} \over {2\,R}}\omega \pi2Rμo​I​ωπ r2 sin ω\omegaω t
  2. B
    μoI4 Rωπ{{{\mu _o}{\rm I}} \over {4\,R}}\omega \pi4Rμo​I​ωπ r2 sin ω\omegaω t
  3. C
    μoI4 Rω{{{\mu _o}{\rm I}} \over {4\,R}}\omega4Rμo​I​ω r2 sin ω\omegaω t
  4. D
    μoI2 Rω{{{\mu _o}{\rm I}} \over {2\,R}}\omega2Rμo​I​ω r2 sin ω\omegaω t
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