Unit III: Magnetic Effects of Current and Magnetism                          (Chapter-4  Magnetic Effect of Current)

Concept of the magnetic field, Oersted’s experiment. Biot - Savart law and its application to current carrying circular loop.Ampere’s law and its applications to infinitely long straight wire, straight and toroidal solenoids. Force on a moving charge in uniform magnetic and electric fields. Cyclotron.Force on a current-carrying conductor in a uniform magnetic field. The force between two parallel current carrying conductors – definition of ampere. Torque experienced by a current loop in a magnetic field; moving coil galvanometer – its current sensitivity and conversion to ammeter and voltmeter.