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The core of a toroid having 3000turns ha...

The core of a toroid having `3000turns` has inner and outer radii of `11cm` and `12cm` respectively. The magnetic field in the core for a current of `0*70A` is `2*5T`. Calculate relative permeability of the core?

A

100

B

200

C

300

D

400

Text Solution

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The correct Answer is:
D
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