Assertion :For controlling voltage by variable resistor, all the three terminals are connected to the circuit and then the variable resistor is referred as potentiometer Reason: Potentiometer has wide application in field of voltage and resistance calculation.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
$\to$ Assertion: For controlling voltage by variable resistors, all the three terminals are connected to the circuit ad then the variable resistors is referred as potentiometer.
$\to$ Reason :Potentiometer has wide application in field of voltage and resistance calculations.
It functions as a potential divider and is used to generate a voltage signals depending on the position of potentiometer.
Hence both assertion and reason are correct but reason is not correct explanation for assertion.

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