Ohm's LawIn the mid 1800's German physicist, Georg Simon Ohm noticed the following:There is a direct relationship between the amount of electromotive force applied to a circuit and theamount of current in the circuit. In other words, if the EMF in a circuit increases by 10%, the currentin the circuit will also increase by 10%.There is also a direct inverse relationship between the amount of resistance in a circuit and thecurrent in a circuit. In other words, if the resistance in a circuit increases by 10%, the current in thecircuit will decrease by 10%.He formulated a mathematical equation to represent these relationships. The equation is known as Ohm'slaw.E = I x R.This equation can be manipulated with algebra to produce two other formulas:I = E/RR = E/IIf you will recall from Chapter One, "E" represents Electro-motive force (EMF), "I" represents Current, and"R" represents resistance. In typical automotive diagnostics, most of Ohm's law calculations are not very
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