A long conductor of radius R carries a current uniformly distributed over its…

Physics · JEE Advanced · NTA Exams — Magnetic Effects of Current and Magnetism

1. The magnetic field strength is maximum on the surface
2. The magnetic field strength is zero on the surface
3. The strength of the magnetic field inside the cylinder will vary as directly proportional to r, where r is the distance from the axis.
4. The energy density of the magnetic field outside the conductor varies as inversely proportional to 1/r², where r is the distance from the axis.

Answer

(A) The magnetic field strength is maximum on the surface, (C) The strength of the magnetic field inside the cylinder will vary as directly proportional to r, where r is the distance from the axis., (D) The energy density of the magnetic field outside the conductor varies as inversely proportional to 1/r 2 , where r is the distance from the axis.

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