What type of force interacts in electromagnetic induction processes as observed in eddy current testing?

In electromagnetic induction processes, especially in applications like eddy current testing, magnetic force plays a crucial role. Eddy current testing operates on the principle of generating eddy currents within a conductive material when exposed to a changing magnetic field.

When an alternating magnetic field is applied, it induces circulating currents in the material, known as eddy currents. These eddy currents create their own magnetic fields that interact with the original magnetic field applied. This interaction is essential for detecting flaws or changes in material properties, as the induced eddy currents will vary depending on the geometry and conductivity of the tested material.

This process exemplifies the fundamental relationship between magnetism and electricity—where changing magnetic fields induce electrical currents through the principles of magnetic force. Understanding this interaction is vital for interpreting the results from eddy current testing, as the induced currents' magnitude and characteristics can signify material conditions such as thickness, conductivity, and the presence of defects.

Considering other forces, gravitational force does not play a direct role in this testing method, and while electric force is involved in current flow, it is not the primary force that drives the induction process. Electromotive force is a related concept but refers specifically to the energy provided per unit charge in a circuit and does not describe the interaction