Dimensional formula of magnetic field of induction (B) is:
Given Force on a charged particle is given by: F=qvBsinθ where θ is angle between velocity and magnetic field.
Choose the correct option concerning magnetic forces and fields?
I. The magnetic field lines due to a current-carrying wire radiate away from the wire.
II. A charged particle can move through a magnetic field without feeling a magnetic force.
III. The kinetic energy of a charged particle can be increased by a magnetic force.