  In the introductory courses on electromagnetism, the Biot-Savart law is
generally explained by a simple example to find the magnetic field created at
any point in space by a small wire element that carries a current. The simplest
system studied consists in a straight finite wire, however, to explore the
magnetic field in complex geometries is required more imagination to solve the
mathematics involved. In this paper, we present a practical methodology to use
the superposition principle of magnetic fields by using n-times a finite
current-carrying wire to evaluate the magnetic field at any point in space for
various geometric configurations. This approach allows students to explore
systems with different levels of complexity, combining analytical and
computational skills to visualize and analyze the magnetic field.
