Which of the following characterizes fiber optic cables in terms of EMI?

Fiber optic cables are characterized by their immunity to electromagnetic interference (EMI). This means that they do not conduct electrical signals and, therefore, are not affected by electrical noise that can be caused by various sources such as motors, power lines, or radio frequency interference. The transmission of data occurs through light signals within the fiber, which makes them inherently resistant to interference from external electromagnetic sources.

This immunity is a significant advantage of fiber optic technology, especially in environments with high levels of electrical noise or in applications requiring high data integrity and performance. The absence of metal conductors in fiber optics is crucial to this characteristic, ensuring that they can operate effectively without the risk of degradation from EMI, which is often a concern with copper-based cabling.