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## The device used to obtain a fixed resistance in a circuit is

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The device used to obtain a fixed resistance in a circuit is

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Mathematics
2 months
2021-07-31T02:50:10+00:00
2021-07-31T02:50:10+00:00 2 Answers
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## Answers ( )

Answer:The power transferred to fan is given as P=V

2

/R, where R is the total resistance of the circuit. As power is inversely proportional to total resistance. So for maximum power, the total resistance should be minimum. Total resistance here is R=

6+r

6r

+3. r is the variable resistance.

R is minimum when r=0.

The device is a resistor.