Resistors

A resistor is an electronic component that limits or regulates the flow of electrical current in a circuit.

Resistors are used in various electronic circuits for voltage division, current limiting, biasing transistors, and generating heat, among other applications.

Resistors are rated by their resistance value in ohms, tolerance, and power rating. The resistance value indicates how much it resists the flow of electrical current.

Resistor tolerance refers to the maximum deviation in resistance value that is acceptable from the specified resistance value. It is usually given as a percentage.

The common types of resistors include carbon film, metal film, wire wound, and variable resistors like potentiometers and rheostats.

To find the total resistance of resistors in series, you simply add up the individual resistance values.

To find the total resistance of resistors in parallel, you use the formula 1 / (1/R1 + 1/R2 + ... + 1/Rn), where R1, R2, ... Rn are individual resistance values.

A resistor network is a combination of multiple resistors arranged in a specific configuration to achieve a desired resistance value or performance.

Temperature coefficient of a resistor indicates how its resistance changes with temperature. It is expressed in parts per million per degree Celsius (ppm/°C).

Resistors often have color bands that represent their resistance values according to a specific color code system. By reading these colors, you can determine the resistance value.