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What is the resistor and its function?
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.
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 of resistor is made from winding Nichrome or similar wire on an insulating form.
Resistors are used for many purposes. A few examples 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.
A resistor is an electric component with a predetermined electrical resistance, like 1 ohms, 10 ohms 100 ohms 10000 ohms, etc.. Resistance is the property of a conductor, which determines the quantity of current that passes through it when a potential difference is applied across it.
Resistors can be seen in almost all electronic circuits. There are many types of resistors and they can be divided into two groups namely fixed resistor and adjustable resistor (variable resistor). The main function of the resistor is to resist the flow of electric current and regulate the flow of electrons.
What do you mean by resistivity?
Resistivity is a measure of the resistance of a given size of a specific material to electrical conduction. ... Materials that conduct electrical current easily are called conductors and have a low resistivity. Those that do not conduct electricity easily are called insulators and these materials have a high resistivity.
The resistivity of a material is the resistance of a wire of that material of unit length and unit cross-sectional area. The unit for resistivity is the ohm-meter. The resistivity of a material depends on its nature and the temperature of the conductor, but not on its shape and size
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