CBSE-XI-Physics
36: Permanent Magnets
- #6The force on a north pole,
F→=mB→, parallel to the field
B→. Does it contradict our earlier knowledge that a magnetic field can exert forces only perpendicular to itself?Ans : Yes, it seems to contradict with our earlier knowledge that a magnetic field can exert forces only perpendicular to itself.
`` \stackrel{\to }{F}=m\stackrel{\to }{B}``
Here,
`` \stackrel{\to }{B}`` = Magnetic field
m = Magnetic charge
For a positive magnetic charge, force is along the magnetic field.
For a negative magnetic charge, force is opposite to the magnetic field.
Thus, it contradicts the notion that a magnetic field can exert forces only perpendicular to itself.
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