Lessons

Eamcet Physics
2 nd Year : Unit 3.2 ( Magnetic Effects of Current And Magnetism ) - Electro Magnetism

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Q.

A straight wire of length (π2) meter is carrying a current of 2A and the magnetic field due to it is measured at a point distance 1cm from it. If the wire is to be bent into a circle and is to carry the same current as before, the ratio of the magnetic field as its centre to that obtained in the first case would be

View Answer

Correct choice: B

Explanation:

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