A positively charged particle (α-particle) is projected towards west in a horizontal plane. It is deflected towards north in the same plane by a magnetic field. Which one among the following is the direction of the magnetic field?

A charged particle moves through a magnetic field B with a velocity v. Which one of the following statements is true for the force (F) experienced by the particle?

Which one of the following laws of electromagnetism does not give the direction of magnetic field ?

A current through a horizontal power line flows in east to west direction. What will be the direction of magnetic field at a point directly below it when viewed from east end?

With regard to the magnetic field lines, which one among the following statements is NOT correct?

Which one of the following statements regarding magnetic field is NOT correct ?