Resistor is one of the passive members of the electronic family.
As the name refers to, the function of a resistor is to resist
the flow of current in electronic circuits.
These are basically made of ceramic externally and carbon internally.
The extent of carbon determines the value of the particular resistor.
What are resistors?
Resistors can be identified by their color code printed over their cylindrical body. These color bands have specific codes and are arranged through specific arrangement which indicate their values.
The unit of resistance is measured in Ohms. Thousand Ohms corresponds to 1Kilo Ohm and thousand KiloOhm corresponds to 1
These devices have two leads terminating from the two ends of their body.
The carbon resistors are generally in the range of quarter, half, one or two watts. For higher wattage resistor, the carbon type of resistors are replaced by the wire wound types.
Wire wound resistors are a bit bulkier in their size and have the values printed directly over their bodies. They are mostly box shaped and white on color. Some of the wire wound resistor may also come with cylindrical shapes, resembling a drum, hollow at the center.
Resistors can also be measured directly using an Ohm meter or by using a multimeter kept at Ohms range.