Question

A charge qcoulomb moves in a circle at n revolutions per second and the
radius of the circle is rmetre. Then magnetic field at the centre of the
circle is
a) 24 x 10-N/amp/metre
b) 279x10- Nlamp/metre
c) ang
2wng 10-N/amp/metre
d) 29 N/amp/metre
T.​

Answer 1

Answer:

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