What is the proper color code for a 100 ohm resistor with a 10 percent tolerance?

The correct color code for a 100 ohm resistor with a 10 percent tolerance is represented as Brown, Black, Brown, Gold.

The first two colors indicate the significant digits of the resistance value: Brown represents 1 and Black represents 0. Thus, they combine to form the value 10. The third color, which is also Brown, indicates a multiplier of 10, meaning that 10 multiplied by 10 gives us 100 ohms.

The tolerance is indicated by the final color, which in this case is Gold, signifying a tolerance of 10 percent. This means that the actual resistance value can vary within 10 percent above or below 100 ohms.

Understanding this color coding system is crucial for identifying and utilizing resistors correctly in various electronic applications.