A resistor is an electronic component used to reduce the current flow. A practical example for this process is that the flow of water reduces while passing through a small pipe reduces the flow speed of
water.. here here the water acts as current and the small pipe act as resistor! now you’ll get an idea about a resistor!
Calculated using OHM’S LAW! And hence the resistor is measured using the unit of ohms!
color coding of resistors:( used to find the resistance)
The resistance of the resistor & its tolerance are specified on the resistor with color code bands that gives the value of the resistance.
The color code is classified into 3:
4 bands: (digit, digit , multiplier, tolerance).
5 bands: (digit, digit, digit , multiplier, tolerance).
6 bands: (digit, digit, digit , multiplier, tolerance , temperature coefficient).
tolerance is the allowable error of the resistor
Hope it helps!