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प्रश्न
Explain the statement ‘the potential difference between two points is 1 volt’.
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उत्तर
One volt is the potential difference between two points in an electric circuit when 1 joule of work is done to move a charge of 1 coulomb from one point to another.
1 volt = `(1 "Joule")/(1 "Coloumb")`
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संबंधित प्रश्न
By what other name is the unit joule/coulomb called?
Name a device that help to measure the potential difference across a conductor.
What is Ohm's law? Explain how it is used to define the unit of resistance.
If the potential difference between the end of a wire of fixed resistance is doubled, by how much does the electric power increase?
State the S.I. unit of electric potential.
The following table shows current in Amperes and potential difference in Volts.
What will be the nature of the graph between the current and potential difference? (Do not draw a graph.)
The differences between the electrostatic potential of the positive end the negative end of an electric cell is the ______ of the cell.
A current of 0.2 A flows through a wire whose ends are at a potential difference of 15 V. Calculate:
(i) The resistance of the wire, and
(ii) The heat energy produced in 1 minute.
What would you suggest to a student if while performing an experiment he finds that the pointer/needle of the ammeter and voltmeter do not coincide with the zero marks on the scales when the circuit is open? No extra ammeter/voltmeter is available in the laboratory.
