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Potentiometer

advantages of...

Question

advantages of potentiometer ?

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Solution

An instrument for measuring an electromotive force by balancing it against the potential difference produced by passing a known current.
A variable resistor with a third adjustable terminal.

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Q. State the advantages of potentiometer over voltmeter.

What is the advantage of using thick metallic strips of join wires in a potentiometer?

Why 10 wire potentiometer is more sensitive than 4 wire potentiometer? Also give another way to increase the sensitivity of potentiometer .

Q. Assertion :A potentiometer having

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wires is more accurate than the potentiometer having

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wire Reason: Potential gradient of

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Q. How will the position of balance point in the potentiometer will be affected if, (I) current in the potentiometer be increased, (ii) length of the potentiometer wire be doubles?

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