Category: Resistors

Potentiometers

Resistors provide a fixed value of resistance that blocks or resists the flow of electrical current around a circuit, as well as producing a voltage

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Resistivity

Ohms Law states that when a voltage (V) source is applied between two points in a circuit, an electrical current (I) will flow between them

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Varistor Tutorial

Unlike the fuse or circuit breaker which offers over-current protection, the varistor provides over-voltage protection by means of voltage-clamping in a similar way to the

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Resistor Tutorial Summary

The job of a Resistor is to limit the current flowing through an electrical circuit. Resistance is measured in Ohm’s and is given the symbol Ω Carbon, Film and Wirewound

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Potential Difference

Unlike current which flows around a closed electrical circuit in the form of electrical charge, potential difference does not move or flow it is applied.

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Resistor Colour Code

There are many different types of Resistor available which can be used in both electrical and electronic circuits to control the flow of current or to produce

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Resistors in Series

Individual resistors can be connected together in either a series connection, a parallel connection or combinations of both series and parallel, to produce more complex

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