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CBSE Class 10 Answered

What is the magnitude of magnetic field at the centre of a circular wire, if the radius of the circular wire is 1 m and the current is 20 A.?
Asked by Rhea Babu | 11 Sep, 2013, 09:12: PM
answered-by-expert Expert Answer
B= moI/ 2pi R
=  4x pi x 10 -7 x 20/2 x pi x 1
=4 x 10-6 T
Answered by | 12 Sep, 2013, 12:35: PM

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