Final answer:
The concentric magnetic field produced by a straight conductor carrying an electrical current is called the magnetic field produced by a current-carrying wire.
Step-by-step explanation:
The concentric magnetic field produced by a straight conductor, such as a piece of wire, carrying an electrical current is called the magnetic field produced by a current-carrying wire. The magnetic field lines form concentric circles around the wire, and the field vectors are tangent to these circles. The right-hand rule can be used to determine the direction of the magnetic field.