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The fractional change in the magnetic field intensity at a distance r from centre on the axis of the current carrying coil

Q. The fractional change in the magnetic field intensity at a distance r from centre on the axis of the current carrying coil of radius ‘a’ to the magnetic field intensity at the centre of the same coil is : (Take r < a)                                     (JEE-2021)

The fractional change in the magnetic field intensity at a distance r from centre on the axis of the current carrying coil of radius

 

 

Aditya Bhatt Answered question 30 January 2024
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