Electrical Voltage



ELECTRICAL VOLTAGE (Potential) – It takes an electric field, or another way of putting it, a difference in potential to cause electrons which are negatively charged to be attracted to be attracted to a positively charged body. That Potential difference is commonly called Voltage.

 ELECTRICAL CURRENT – The motion of the electrons is known as the Electrical Current. It is analogous to water running through a pipe. The Electrical Potential is analogous to a water tower which contains the stored water in the form of potential mechanical energy. Electrical Current is measured in Amperes (AMPS).

RESISTANCE – As the word implies, the medium (wire)  in which the electrons flow provide a certain amount of Resistance.   This would be analogous to the diameter of the water pipe. Electrical RESISTANCE  is measured in Ohms.

Ohm’s Law is the equation which relates the voltage, current and resistance in a circuit.

Voltage is measured using a voltmeter, Current is measured with an ammeter, and Resistance with an ohmeter.

Combination meters are known as VOM’s or Volt Ohm Meters.

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