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2) The magnetic field at the center of a current carrying wire is: a) Is one half the field as the surface b) Cannot be known

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Answer #1

The magnetic field at a point inside the wire is directly proportional to the distance of the point from the centre of the wire. Since r=0 at the center of the wire. Therefore  magnetic field at the center of the wire will be  zero.

Therefore (C)PART CORRECT OPTION

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