Questions
Charge q is uniformly spread on a thin ring of radius R. The ring rotates about its axis with a uniform frequency f Hz. The magnitude of magnetic induction at the centre of the ring is :
detailed solution
Correct option is C
B=μ0i2r=μ02rqT=μ0qf2rTalk to our academic expert!
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An electron moves in a circular orbit with a uniform speed v. It produces a magnetic field B at the centre of the circle. The radius of the circle is proportional to
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