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Q.

What is Meant by Effective Resistance?

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Detailed Solution

Effective resistance means the total resistance of a circuit or part of a circuit when multiple resistors are connected together in series or parallel. In electrical circuits, resistors control the flow of electric current. When more than one resistor is present, they combine to give an overall resistance. This combined value is called the effective resistance.

Cases

Type of ConnectionFormula
SeriesR = R1 + R2 + R3 ...
Parallel1/R = 1/R1 + 1/R2 + 1/R3 ...

Example

If two resistors of 4Ω and 6Ω are connected in series, effective resistance = 10Ω. If the same resistors are connected in parallel, effective resistance = 2.4Ω.

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