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Questions  

A cylindrical conductor of radius R is carrying a constant current. The plot of the magnitude of the magnetic field, B with the distance, d from the centre of the conductor, is correctly represented by the figure

a
b
c
d

detailed solution

Correct option is D

Magnetic field due to long solid cylindrical conductor of radius R (i)For dR,B=μ0I/2πd ⇒ B∝1/d .

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