Voltage

VOLTAGE

As we said before, electron flow or current is caused by electron unbalance. In other words, when one end of a conductor has a positive charge and the other end has a negative charge, electrons will move to the positive end. The greater the difference in the amount of electrons at opposite ends of a wire, the greater the pressure will be that is pushing the electrons through the wire. This pressure is commonly known as potential difference, or VOLTAGE.

Voltage and its effect on electric current in a wire can be compared to pressure and its effect on water flowing in a pipe. When pressure is increased on water in a pipe, a greater volume of water will flow in a given period. If the voltage of an electrical circuit is increased, a greater number of electrons will move--more current will flow.

Voltage is measured with a VOLTMETER, which will be covered in detail later.

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3. The Starter
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5. The Voltage Regulator
6. Lighting
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8. Interior Lights
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10. Turn Signals and Hazard Lights
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17. Introduction To Automotive Batteries
18. Battery Construction
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20. Specific Gravity
21. Voltage And Capacity
22. Battery Ratings
23. Testing Automotive Batteries
24. Preventive Maintenance Of Batteries
25. Optical Battery & Antifreeze Tester
26. Measuring Specific Gravity With The Optical Battery Tester

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