The resistor has no direction of connection, it is not polarized.
It allows for example to lower the voltage of an electrical circuit.
In Fig. A is represented the color code which allows to know the value of the resistors.
The first 3 colored rings of the resistor are the significant digits.
The next ring is the multiplier digit.
The next ring is the resistance tolerance.
The last ring is the temperature coefficient. (optional)
For example, the resistor shown in Fig. A has a value of 120 Ω with a tolerance of +/- 5% and a temperature coefficient of 100 ppm.
Starting from the left:
- Ring N°1 brown: 1
- Ring N°2 red: 2
- Ring N°3 black: 0
- Ring No. 4 black: * 1 Ω
- Golden ring N°5: +/- 5%
- Ring No. 6: 100 ppm