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Ohm's Law | Wire Gauge Capacitys & Uses | Circuit Capacities | Appliance Wattages

"Ohm's Law"

There is a fundamental relationship between voltage, amperage, and resistance in a closed functional circuit. This relationship is known as "Ohm's Law." Ohm's Law states:

1. Current is directly proportional to the applied voltage.

2. Current is proportional to the circuit's resistance.

 

What the heck does that mean?

1. When the circuit voltage increases, the current increases.

2. When the circuit voltage decreases, the current decreases.

3. When the circuit resistance increases, the current decreases.

4. When the circuit resistance decreases, the current increases.

Wattage also has a direct relationship with voltage, amperage, and resistance in the circuit.

Current and amperage are two words meaning basically the same thing.  However, amperage is the measurement used to communicate the amount of current flowing past a given point in one second.

The symbol of I for current can also be used in place of A for amperage.