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A circular coil of radius R carries an electric current. The magnetic field due to the coil at a point on the axis of the coil located at a distance r from the center of the coil, such that r>>R, varies as1) 1/r2) 1/(r)^(3/2)3) 1/r^24) 1/r^3

A circular coil of radius R carries an electric current. The magnetic field due to the coil at a point on the axis of the coil located at a distance r from the center of the coil, such that r>>R, varies as1) 1/r2) 1/(r)^(3/2)3) 1/r^24) 1/r^3

Grade:12

3 Answers

Arun
25758 Points
4 years ago
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
Gitanjali Rout
184 Points
4 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)
Gitanjali Rout
184 Points
4 years ago
hope you find theprevious ans helpful.

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