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Wagner device is a ____________

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Wagner device is a ____________

(a) capacitance bridge

(b) resistance bridge

(c) inductance bridge

(d) impedance bridge

I had been asked this question in quiz.

My question is from Shielding and Grounding of Bridges topic in chapter Measurement of Inductance and Capacitance of Electrical Measurements

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Best answer
The correct answer is (a) capacitance bridge

Best explanation: A Wagner earth device is generally used for shielding and grounding purpose. It consists of capacitances in the ratio arms along with a series RC combination connected across the ends of the bridge forming a potential divider.

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