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Dear student
When
r >> R
Mgnetic field at a point on the axis of a loop is given by
B = (mu /2 * pi) (AI/ r³)
Hence
B is proportional to 1/r³
Hence Correct option is D
Last Activity: 6 Years ago
Dear studentWhen r >> R The magnetic field at a point on the axis of a loop is given by B = (mu /2 * pi) (AI/ r³)
Last Activity: 6 Years ago
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