# What Does A Resistor Do And Why Is It Important? - Del.

A resistor is an electrical component that restricts the flow of electric current. A graph of current against potential difference shows you how the current flowing through a component varies with.

An electrical resistor has colored bands across its body that indicate its resistance value and other specifications. The fourth band represents the resistor's tolerance, a measure of accuracy. Tolerance indicates how much the measured value of its actual resistance is different from its theoretical value, and it is calculated using percentages. MELF resistor are more expensive than the more widely used SMD resistors, but they are used in applications where the additional performance is needed. MELF resistors are able to provide higher levels of performance in terms of long term stability, moisture resistance, reliability, and the resistance to the effects of temperature cycling experienced int he soldering processes used today. There are many answers here on the right track. But just to add my 2 cents worth:- The tolerance of a resistor tells you how far, in percentage, from its nominal value the actual measured resistance of that resistor may be. if, say 10%, it means t. Related Topics. Electrical - Electrical units, amps and electrical wiring, wire gauge and AWG, electrical formulas and motors; Related Documents. Copper and Aluminum Wire - Electrical Resistance - Electrical resistance in plain copper or aluminum wire; Electrical Resistance in Serial and Parallel Networks - Resistors in parallel and serial connections. Electrical Resistance in Serial and Parallel Networks - Resistors in parallel and serial connections; Parallel Circuits - Resistance, voltage and current in parallel networks; Resistors - Color Codes Calculator - Color codes for fixed resistors - values and tolerances - online calculator. Surface Mount Technology (SMT) Resistors are available in a range of standard packages (shape and size) agreed by the Electronics Industry Alliance (EIA) through the Solid State Technology Association, formerly known as Joint Electron Device Engineering Council (JEDEC). Do resistors affect current or voltage? In general, a change in resistance will change both the voltage across and current through the resistor. For example, consider the simple voltage divider circuit - a voltage source and two resistors, , connected in series. The speed represents the average wind speed during the time period, i.e. the mean wind speed you may encounter (in reality the wind will strengthen and lull constantly above and below this value). The arrow shows the direction that the wind is blowing, and the letter represents the direction the wind is blowing from (on a standard 16-point compass rose). What is mean by resistors - 13633051 Explanation: A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. How does the resistor color code work? Check out All About Circuits Resistor Color Code Calculator, a handy tool for reading resistor color code values. Resistor values are often indicated with color codes. Practically all leaded resistors with a power rating up to one watt are marked with color bands. A device used in electrical current conduction to control the direction of the current flowing to a circuit by applying resistance. Resistors may be fixed or variable, both controlling the flow of current differently. Also known as resistors, resistor-capacitors or RC filters, Electrocube's RC Networks are designed to prevent or substantially minimize the occurrence of arcing and noise generations in relay and switch contacts. New Yorker Electronics Supplies Electrocube RC Networks Resistor-Capacitor Circuits.

## What Does A Resistor Do And Why Is It Important? - Del.

On a schematic I have, some resistors read as R16, 0.025R, 3W. Some read as R60, 33R. I guessed that R16 or R60 are the labels, and 3W is the power. But what does 0.025R or 30R mean? Google search did not help much. Thanks.

Resistors are either fixed value, or variable. A variable resistor has three terminals; one at either end and one attached to a moving 'wiper', and can be connected either as a potentiometer or as.

Special components called resistors are made for the express purpose of creating a precise quantity of resistance for insertion into a circuit. They are typically constructed of metal wire or carbon and engineered to maintain a stable resistance value over a wide range of environmental conditions.

Resistor values are usually shown using coloured bands, each colour represents a number as shown in the table. Most resistors have 4 bands: The first band gives the first digit.; The second band gives the second digit.; The third band indicates the number of zeros.; The fourth band shows the tolerance (precision) of the resistor but this may be ignored for almost all circuits.

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A resistor is a device which is designed to increase the ability of an electric circuit to stop the flow of an electric current through it.