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Slider movement depends on ________

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Slider movement depends on ________

(a) current magnitude

(b) resistance magnitude

(c) voltage magnitude

(d) power magnitude

I had been asked this question during an interview.

This question is from Potentiometric Integrating Type DVM topic in section Electronic Instruments of Electrical Measurements

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Best answer
Right choice is (c) voltage magnitude

The explanation is: In a potentiometric integrating type DVM, the slider moves based on the magnitude of the feedback voltage with respect to the input voltage. Contact is pushed back to the place where the unknown voltage equals the feedback voltage.

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