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A charge Q is uniformly distributed over the surface of non-co
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A charge is uniformly distributed over the surface of non-conducting disc of radius . The disc rotates about an axis perpendicular to its plane and passing through its centre with an angular velocity . As a result of this rotation, a magnetic field of induction is obtained at the centre of the disc.

If we keep both the amount of charge placed on the disc and its angular velocity to be constant and vary the radius of the disc, then the variation of the magnetic induction at the centre of the disc will be represented by the figure
Induced emf
Induced emf
Induced emf
Induced emf

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Book

Book:

Arihant Physics JEE Main Chapterwise Solutions (2019-2002) (Arihant)

Exam

Exam:

JEE Mains 2012

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A charge is uniformly distributed over the surface of non-conducting disc of radius . The disc rotates about an axis perpendicular to its plane and passing through its centre with an angular velocity . As a result of this rotation, a magnetic field of induction is obtained at the centre of the disc.

If we keep both the amount of charge placed on the disc and its angular velocity to be constant and vary the radius of the disc, then the variation of the magnetic induction at the centre of the disc will be represented by the figure
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Question Text
A charge is uniformly distributed over the surface of non-conducting disc of radius . The disc rotates about an axis perpendicular to its plane and passing through its centre with an angular velocity . As a result of this rotation, a magnetic field of induction is obtained at the centre of the disc.

If we keep both the amount of charge placed on the disc and its angular velocity to be constant and vary the radius of the disc, then the variation of the magnetic induction at the centre of the disc will be represented by the figure



TopicElectromagnetic Induction
SubjectPhysics
ClassClass 12
Answer TypeText solution:1
Upvotes82