Article: Voltage drop tests a powerful diagnostic for electrical woes.(DIAGNOSTIC PULSE)

Voltage drop as a theory and voltage drop testing are often ignored because the test and its usefulness are often misunderstood. Let's clear up that misunderstanding.

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The definition of drop

Voltage is electrical pressure; current (amperage) is the flow of electrons. Each conductor of electricity, whether copper, silver or gold, resists the flow of electrons a certain amount. Naturally, some conductors resist electron flow more than others (copper has more resistance than gold).

As electrons pass through a resistance, which can be a section of wiring, a bulb, switch, or solenoid, some electrons are lost trying to ...

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