Resistors are electronics component that opposes the flow of electricity in a circuit. Resistors are used to adjust current and voltage in electrical circuits, just like taps are used to adjust the flow of tap water. These can be used not only to control the flow of current but also to distribute voltage in a circuit. Resistors are needed for electronic circuits to operate under suitable conditions.
Resistors are made of materials that oppose the flow of electricity as it passes through them. In this way, they can control the flow of current throughout the circuit. When the current is reduced by a resistor, the excess electrical energy is converted into heat.
Resistors are available in a variety of forms, including the following major varieties:
Fixed resistors
Variable resistor
Potentiometers
The major types of static resistors include carbon-film resistors and metal-film resistors, which incorporate a carbon or metal coating, respectively. The resistance value of these resistors is fixed. Variable resistors have resistance values ​​that can be changed. Potentiometers are a type of variable resistor used to fine-tune voltage and current.