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State the underlying principle of a potn...

State the underlying principle of a potntiometer.

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When a constant current flows through a wire, the potential difference, between any two points on the wire of uniform cross section, is directly proporational to the length of the wire between these points.
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OSWAAL PUBLICATION-CURRENT ELECTRICITY -TOPIC-3 (POTENTIOMETER & APPLICATIONS) (VERT SHORT ANSWER TYPE QUESTIONS)
  1. State the underlying principle of a potntiometer.

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  2. What is a potentiometer?

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