What is produced alongside heat whenever current flows through a conductor?

When current flows through a conductor, a magnetic field is produced as a result of the motion of electric charge carriers, typically electrons. This phenomenon is governed by Ampère's law, which states that electric currents create magnetic fields in the surrounding space. The direction of the magnetic field can be determined using the right-hand rule, where if you point your thumb in the direction of the conventional current, your fingers will curl in the direction of the magnetic field lines.

Electrical energy is converted into heat due to the resistance encountered by the current, a process known as Joule heating, but it is the magnetic field that forms as an intrinsic property of current flow in a conductor. This occurrence is fundamental in various applications, such as in transformers and electric motors, where the interaction between magnetic fields and electrical currents enables their operation. Understanding this relationship is crucial in electrical engineering and lineman training.