A Very Long,solid,conducting Cylinder of Radius R Carries a Current

question 12

Multiple Choice

A very long,solid,conducting cylinder of radius R carries a current along its length uniformly distributed throughout the cylinder.Which one of the graphs shown in the figure most accurately describes the magnitude B of the magnetic field produced by this current as a function of the distance r from the central axis?

• A) 1
• B) 2
• C) 3
• D) 4
• E) 5