which of the following device would you use to maintain potential difference between two points of a conductor? and why? ...... plz fast ... urgent..........

a. A Rheosat b. A cell c. A voltmeter d. An ammeter

source of electricity such as cell, battery, power supply, etc. helps to maintain a potential difference across a conductor.A voltmeter is an instrument used for measuring the electrical potential difference between two points in an electric circuit.

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voltmeter... becoz it not only measures it but also maintains it.... thumbs uppp

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Voltmeter is a device would you use to maintain potential difference between two points of a conductor...but... it not only measures it but also maintains it...cheers...

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b) A cell

The function of a battery or a cell is to maintain potential difference. It achieves this by supplying electrons to the negative end of the conductor to replace those electrons that drift to the positive end and also by absorbign electrons at the positive end.

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potential difference can be miantained by a cell because the battery has some chemical reaction that pushes the electron from negative terminal to the positive terminal with a specific amount of energy. This amount of energy per electron is a voltage or in other words a potential difference.

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Cell

Because a cell has some amount of chemical that pushes the electron from -ve to +ve terminal with some specific amount of energy.

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