Question

Two coaxial solenoids of different radius carry current I in the same direction. `vec(F_1)` be the magnetic force on the inner solenoid due to the outer one and `vec(F_2)` be the magnetic force on the outer solenide due to the inner one. Then
A. `barF_(1)=barF_(2)=0`
B. `barF_(1)` is radially inwards and `barF_(2)` is radially outwards
C. `barF_(1)` is radially inwards and `barF_(2)=0`
D. `barF_(1)` is radially outwards are `barF_(2)=0`

Answer 1

Correct Answer - 1
`vecF_(1)=vecF_(2)=0`
Because net resultant will be zero.and equal because of action and reaction pair