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| Substituting the expressions of the Ohm Law for the voltages of each resistor, the following expression is obtained: |
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| The equivalent resistor is such that it substitutes for the connection and has the same effect. |
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| Thus: |
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| The schematic representation becomes: |
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| If the number of resistors in the series connection were n, the equivalent resistor would be computed as: |
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| The series connection of resistors is also called voltage divider. |
