Resistors


 

Resistors are used in electric and electronic circuits to control current. There are several types of resistors.
Carbon resistors and wirewound resistors can be classified on the basis of their method of construction and on the basis of their operation as fixed resistors (the resistance value cannot be changed) and variable resistors (the resistance value can be changed).

Color code of the resistor

Resistors are usually so small that it is not practical to print the value on them. Hence, they are given color bands to represent the value of the resistor. These color bands are called resistor color codes.