Question

urrent of 1A is passed through a straight wire of length 2.0 m. The magnetic field at a point in air
stance of 3m from either end of the wire and lying on the axis of wire will be
a)mu not/2pi
b)mu not/4pi
c)mu not/8pi
d) zero
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Answer 1

Answer:

b) my not / 4pi

Explanation:

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