The major electrical and electronic components used in electrical and electronic projects mainly involves these components like resistors, capacitors, fuses, transistors, integrated circuits, relays, switches, motors, circuit breakers etc. In many circuits, these components are used to build the circuit, which are classified into two categories such as active components and passive components.
A resistor, one of the most important passive components, is an electrical component that restricts the flow of current in the circuit. Resistor can also be used to afford a specific voltage to a transistor. When current flows through the resistor, the resistor absorbs the electrical energy and degenerates it in the form of heat. Resistors may have variable or fixed resistances, Microhm Electronics, for instance, providing all kinds of fixed resistors, which can be found in thermistors, photo resistors, trimmers, varistors, potentiometers and hamsters. The current flow through a resistor is directly proportional to the voltage across the resistor terminals. The relationship is represented by Ohm’s law. Ohm’s law states that dissipation due to the resistance and the units of resistance is Ohms.