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

A magnetic field can exert force on a

Two bar magnets are placed close to each other with their opposite poles facing each other. In absence of other forces, the magnets are pulled towards each other and their kinetc energy increases. Does it contradict our earlier knowledge that magnetic forces cannot do any work and hence cannot increase kinetic energy of a system?

A current carrying straight conductor in a uniform magnetic field experiences Maximum force when the conductor is parallel to the field Minimum force when the conductor is perpendicular to the field Maximum force when the conductor makes 45° with the field Maximum force when the conductor is perpendicular to the field

An electric field (vec E) and a magnetic field (vec B)exist in a region . The fields are not perpendicular to each other.

The magnetic induction B and the force F on a pole m are related by

A charge q moves region in a electric field E and the magnetic field B both exist, then the force on its is

An electric charge e moves with a constant speed v parallel to the lines of force of a uniform magnetic field , B the force experienced by the charge is

Tangent law is applicable to a dipole placed in two magnetic field vec(B) and vec (Bo) when