An isolation transformer works through electromagnetic ________.

An isolation transformer operates based on the principle of electromagnetic induction. This process involves the generation of an electromotive force (EMF) in a coil of wire due to the changing magnetic field produced by an alternating current in another coil. In an isolation transformer, the primary coil (input side) creates a magnetic field, which induces a voltage in the secondary coil (output side) without any direct electrical connection between the two.

This method enables the transformer to provide electrical isolation between the input and output, which is crucial for safety, reducing the risk of electric shock, and minimizing electrical noise in sensitive equipment. The efficiency of this induction process relies on the transformer’s design, including its core material and winding configuration.

The other options relating to attraction, conduction, and resistance do not accurately describe the functioning of an isolation transformer. Attraction is not a principle used in transformers, conduction refers to the direct flow of electricity through a material instead of the magnetic coupling phenomenon, and resistance relates to the opposition to the flow of current rather than the induction process that enables transformer function.