Magnetic field due to currentHard
Question
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 the magnetic induction at the centre of the ring is
Options
A.
B.
C.
D.
Solution
The current flowing in the ring is
I = q f ......(i)
The magnetic induction at the centre of the ring is
[Using (i)]
I = q f ......(i)
The magnetic induction at the centre of the ring is
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