What is a resistor? Resistor picture

In physics, resistance (Resistance) is used to represent the size of the resistance of the conductor to the current. The greater the resistance of the conductor, the greater the resistance of the conductor to current flow. Different conductors generally have different resistances, and resistance is a characteristic of the conductor itself. The unit of resistance is ohm (ohm), referred to as ohm, and the symbol is Ω. The larger units are kilohm (kΩ) and megohm (MΩ) (mega=million, that is, 1 million).

Resistive elements are energy-consuming elements that hinder current flow. Resistors, referred to as resistors (Resistor, usually represented by “R”), are the most used components in all electronic circuits. The main physical feature of a resistor is to convert electrical energy into heat energy. It can also be said that it is an energy-consuming element, and internal energy is generated when current passes through it. Resistors usually act as voltage dividers and current dividers in circuits. For signals, both AC and DC signals can pass through resistors.