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How can a Wheatstone bridge be used for the measurement of physical parameters?

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How can a Wheatstone bridge be used for the measurement of physical parameters?

(a) in conjunction with a rectifier

(b) along with an op amp

(c) by connecting it to a thermistor

(d) by making use of a transducer

The question was posed to me in final exam.

Asked question is from Applications of Wheatstone Bridge in portion Measurement of Resistance of Electrical Measurements

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Right option is (b) along with an op amp

Explanation: A Wheatstone bridge can be used for the measurement of physical parameters such as temperature, strain, light, etc by making use of an operational amplifier. Rectifier circuits are used for the conversion of ac to dc.

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