An electrical device’s power rating provides a general idea of…
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What is a Carbon Film Resistor? Carbon film resistors are a type of…
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What are Photoresistors? Photoresistors, also known as light dependent…
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Resistors are available in a large number of different package styles…
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Motor capacitors AC induction motors use a rotating magnetic field to…
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Filter capacitors Capacitors are reactive elements, which make them…
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The resistor is a passive electrical component that creates…
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Resistance of a Resistor The function of a resistor is to oppose the…
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What is inductance? Electric inductance is a property of all…
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What Is Electrical Resistivity? Electrical resistivity is a measure of…
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We already know that purely reactive components (or purely reactive…
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Metal Film Resistors Metal film resistors have a thin metal layer as…
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In a purely resistive AC circuit, power is simply power. If we add…
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What is a Rheostat? A rheostat is a variable resistor which is used to…
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The Effect of Phase We saw in the previous page that the voltage…
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What is a Foil Resistor? The metal foil resistor has the best…
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What Is Ohm’s Law? Ohm’s law states that the electrical…
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As you now know, reactive components can cause a circuit’s power…
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AC electrical systems make extensive use of transformers. A…
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What is a Potentiometer? A potentiometer is a manually adjustable…
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