Question

The force on a north pole, →F=m→B, parallel to the field →B. Does it contradict our earlier knowledge that a magnetic field can exert forces only perpendicular to itself?

Answer 1

Yes, It seems to contradict our earlier belief that a magnetic field can only conduct forces perpendicular to itself.

Explanation:

$\vec{F}=M \vec{B}$

Here,

$\vec{B}=$ Magnetic field

m = Magnetic charge

• The force is along the magnetic field for a positive magnetic charge.  

• For a negative magnetic charge, the magnetic field is opposed by power.  

• Thus it contradicts the idea that a magnetic field can only conduct forces perpendicular to itself.