| SERIES CIRCUITS - VOLTAGE IN A SERIES CIRCUIT | ||
In any series circuit, the SUM of the resistor voltage drops must equal the source voltage. This statement can be proven by an examination of the circuit shown here. In this circuit, a source potential (ET) of 20 volts is dropped across a series circuit consisting of two 5-ohm resistors. The total resistance of the circuit (RT) is equal to the sum of the two individual resistances, or 10 ohms. Using Ohm's law, the total circuit current (IT) is first calculated as shown. |
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