Chemical Effects Of Current


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Electrostatic Potential

       The electrostatic potential at any point defined as the work done in bringing a unit positive charge from infinity to that point. The S.I. unit of electrostatic potential isvolt. It is denoted by symbol V.

Potential Difference

       The potential difference between two points A and B in an electric field may be defined as the amount of work done in moving a unit positive charge from point A to point B.

Potential Difference = Potential Difference


V = Potential Difference

       The S.I. unit of potential difference is Volt. Potential difference is a scalar quantity. The potential difference is measured with the help of an instrument called Voltmeter. It should be noted that in order to measure the potential difference of a conductor the voltmeter is connected in parallel circuit with the two ends of the conductor as shown in figure.


1 Volt

       The potential difference between two points in an electric field is said to be 1 volt if 1 Joule of work is done in bringing 1 coulomb of positive charge from one point to another.

1 Volt = 1 Volt

Test Your Understanding and Answer These Questions:

  1. What is electrostatic potential?

  2. What is potential difference?

  3. Define 1 volt?

  4. Name the instrument by which potential difference is measured.

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