What term describes the relationship between current and voltage in a LED?

The relationship between current and voltage in a light-emitting diode (LED) is best described by Ohm's Law. When dealing with an LED, understanding this relationship is crucial because an LED does not obey Ohm's Law in the traditional sense since it is a non-linear device. However, the fundamental connection between voltage (V) and current (I) in any electrical component is still rooted in the concepts of Ohm's Law, which states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points, provided the temperature remains constant.

In the case of an LED, while it has a threshold voltage (the forward voltage drop) beyond which current will begin to flow, Ohm's Law still applies in the regions where the LED operates after that threshold has been reached. For practical applications, LEDs can be modeled using the principles derived from Ohm's Law, especially when incorporating resistors in series to limit current.

The other terms presented do not directly describe the relationship between voltage and current in the specific context of an LED. Kirchhoff's Principle relates to the conservation of charge and energy in electrical circuits; Faraday's Law focuses on electromagnetic induction; and Maxwell's Equations encompass the fundamental principles