Compasses show the direction of the magnetic field around a current in a wire. Iron filings align with the field lines. Place wire and compasses, if desired, under document camera or on projector. If ...

The world of electromagnetism is filled with fascinating phenomena, and one of the most intriguing is the behavior of wire ...

The defining characteristic of a coil is its inductance, denoted by the symbol 'L'. Inductance is a measure of a coil's ability to oppose changes in current flow. When the current through a coil ...