What Is Resistor?
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A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses. High-power resistors that can dissipate many wattsof electrical power as heat, may be used as part of motor controls, in power distribution systems, or as test loads for generators. Fixed resistors have resistances that only change slightly with temperature, time or operating voltage. Variable resistors can be used to adjust circuit elements (such as a volume control or a lamp dimmer), or as sensing devices for heat, light, humidity, force, or chemical activity.
Resistors are common elements of electrical networks and electronic circuits and are ubiquitous in electronic equipment. Practical resistors as discrete components can be composed of various compounds and forms. Resistors are also implemented within integrated circuits.
The electrical function of a resistor is specified by its resistance: common commercial resistors are manufactured over a range of more than nine orders of magnitude. The nominal value of the resistance falls within the manufacturing tolerance, indicated on the component.
What is resistor in simple words?
A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. Resistors can also be used to provide a specific voltage for an active device such as a transistor. ... Another type ofresistor is made from winding Nichrome or similar wire on an insulating form.
What is resistor in simple words?
A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. Resistors can also be used to provide a specific voltage for an active device such as a transistor. ... Another type ofresistor is made from winding Nichrome or similar wire on an insulating form.
What is resistor in simple words?
A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. Resistors can also be used to provide a specific voltage for an active device such as a transistor. ... Another type ofresistor is made from winding Nichrome or similar wire on an insulating form.
What is the purpose of a resistor?
The main function of resistors in a circuit is to control the flow of current to other components. Take an LED (light) for example. If too much current flows through an LED it is destroyed. So a resistor is used to limit the current.
What are the 4 types of resistors?
Types of Fixed resistors.
Carbon Composition Resistors.
Wire Wound Resistors.
Thin Film Resistors.
Thick Film Resistors.
Does a 12v LED need a resistor?
You give too little information for a definitive answer. If this is a “12V” LED, which generallywill consist of several LED chips in combination, no resistor is required.
What is an example of resistor?
Resistors are used for many purposes. A fewexamples include delimit electric current, voltage division, heat generation, matching and loading circuits, control gain, and fix time constants. They are commercially available with resistance values over a range of more than nine orders of magnitude.
Can I use LED without resistor?
Never Ever Connect an LED Without aResistor, Mostly. When hooking up an LED, you are always supposed to use a current-limitingresistor to protect the LED from the full voltage.
Do I need a resistor for each LED?
Some LEDs such as colour changing LEDs, flashing LEDs and 5V LEDs are designed to run off a 5V supply and therefore don't need a resistor. All other standard and bright LEDswill need a current limit resistor. ... For a standard LED the forward voltage will typically be 2V, where as an ultra bright LED will be about 3.5V.
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