30 Two coaxial solenoids of different radii carry current I

Last updated: 6/11/2023

30 Two coaxial solenoids of different radii carry current I in the same direction Let F be the magnetic force on the inner solenoid due to the outer one and F be the magnetic force on the outer solenoid due to the inner one then 1 F is radily outwards and F 0 2 F F 0 3 F is radily inwards and F is radily outwards