Question

What is Resistance
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Answer 1

Answer:

Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who studied the relationship between voltage, current and resistance.

Explanation:

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Answer 2

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.

Overview of types and materials

Example

Fixed resistors.

Variable resistors, such as the: Potentiometer. Rheostat. Trimpot.

Resistance dependent on a physical quantity: Thermistors (NTC and PTC) as a result of temperature change. Photo resistor (LDR) as a result of a changing light level.