A semi-coductor strain gauge

has a much higher gauge factor than that of a metal wire gauge

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employs piezoelectric property of undoped silicon

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does not require temperature compensation

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exhibits very little gauge factor variation as compared to that of metal wire gauges

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Solution

The correct option is A has a much higher gauge factor than that of a metal wire gauge
Due to piezoresistive effect, a semiconductor strain gauge has much higher gauge factor than that of metal wire gauge.

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