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Article: Voltage drop tests a powerful diagnostic for electrical woes.(DIAGNOSTIC PULSE)
- Article from:
- Professional Tool & Equipment News
- Article date:
- November 1, 2007
- Author:
CopyrightCOPYRIGHT 2007 Cygnus Business Media. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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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 ...