Dynamic resistance refers to the change in resistance of a non-linear device, such as a diode, when the voltage across it changes. It is defined as the derivative of voltage with respect to current, representing the slope of the current-voltage curve at a given point, and is crucial for analyzing AC signals in circuits with non-linear components.

Dynamic Resistance

Dynamic resistance

change in resistance

non-linear device

A diode is a semiconductor device that allows current to flow in one direction only, functioning as a one-way valve for electric current. It is widely used in rectification, signal modulation, and as protection devices in circuits to prevent reverse polarity damage.

diode

voltage across it

derivative of voltage

In physics, 'current' refers to the flow of electric charge, typically measured in amperes, and is a fundamental aspect of electrical circuits that influences how devices operate. Current can be direct (DC) or alternating (AC), each with distinct characteristics and applications in technology and power systems.

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