Find the value of relative permeability of iron :

A current of 2 A passes through a coil of 350 turn wound on a ring of mean diameter 12 cm. The flux density established in the ring is 1.4 wb/m2. Find the value of relative permeability of iron.
(a) 191
(b) 600
(c) 1200
(d) 210 x 103

Anurag Mishra Professor Asked on 1st February 2016 in Physics.
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    Answer: (b) 600 

    Anurag Mishra Professor Answered on 21st May 2016.
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