A circular coil of radius R carries an electric current.The magnetic field due 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 as__________
A. 1/r
B. 1/r¾
C. 1/r2
D. 1/r3
Answer:D
A circular coil of radius R carries an electric current.The magnetic field due 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 as__________
A. 1/r B. 1/r¾ C. 1/r2 D. 1/r3