THE magnetic induction equation of electro-dynamics ... energy if it were allowed to circulate about a varying magnetic field. It suggested to W. F. G. Swann1 that fluctuations in the magnetic ...

To calculate the force on a wire carrying a current at right angles to a magnetic field, use the equation: 2 A flows through a 50 cm wire. Calculate the force acting on the wire when it is placed ...

This is because the magnetic field equations are symmetric with regard to the process of swapping the N and S poles. In recent years, the concept of symmetry has been generalized in numerous ...