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Load cells are calibrated such that _______

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Load cells are calibrated such that _______

(a) force varies inversely with resistance

(b) force varies as the square of resistance

(c) force remains constant with resistance

(d) force varies directly with resistance

I have been asked this question in a national level competition.

This intriguing question comes from Strain Gauge Measurement Technique in chapter Transducers of Electrical Measurements

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The correct option is (d) force varies directly with resistance

The best I can explain: The load cells in a semiconductor strain gauge are calibrated in such a way that the force or weight varies directly as the resistance. The strain gauge is arranged in the form of a bridge.

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