resistors

Resistors are passive electronic components whose main function is to limit the electric current that passes through a circuit. They are responsible for reducing the voltage in an electrical circuit, converting electrical energy into heat.

Resistors are composed of a resistive material, which can be carbon, metal film, ceramic, or wirewound. They have two terminals that are used for connection with other circuit components.

The unit of measurement for electrical resistance is the ohm (Ω). The electrical resistance is determined by the formula:

R = V/I

Where R is the electrical resistance, V is the electrical voltage, and I is the electrical current.

Resistors are classified according to their tolerance, which is the allowable variation in electrical resistance from the nominal value. The most common tolerance values ​​are 5% and 10%. Some resistors also have a power value, which determines how much electrical energy the resistor is able to dissipate without being damaged.

Resistors are used in various electronic circuits, such as amplifiers, power supplies, filters, among others. They can be connected in series, parallel or in combination, depending on the desired application.

Resistors can also be used to make voltage dividers, which are circuits that divide electrical voltage into two or more parts. These circuits are often used in electronics to adjust the voltage of a signal.

In summary, resistors are fundamental components in electronic circuits, responsible for limiting the electric current and reducing the voltage in a circuit. They have diverse applications and can be found in different values ​​of resistance, tolerance and power.

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