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प्रश्न
Define the following:
Potential difference
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उत्तर
Potential difference: The potential difference between two points may be defined as the work done in moving a unit positive charge from one point to the other.
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संबंधित प्रश्न
What is meant by saying that the electric potential at a point is 1 volt?
What is the SI unit of potential difference?
Keeping the potential difference constant, the resistance of a circuit is doubled. By how much does the current change?
Explain the statement ‘the potential difference between two points is 1 volt’.
The V-I graph for a series combination and for a parallel combination of two resistors is shown in Fig – 8.38. Which of the two, A or B, represents the parallel combination? Give a reason for your answer.
Calculate the potential difference between the two terminals of a battery if 100 joules of work is required to transfer 20 coulombs of charge from one terminal of the battery to the other.
Write an expression for the electrical power spent in flow of current through a conductor in terms of resistance and potential difference.
What do you understand by the resistance of a wire?
A 10 m long wire of a particular material is of resistance 5Ω What will be the resistance if the wire is doubled itself.
Two charged spherical conductors of radius R1 and R2 are connected by a wire. Then the ratio of surface charge densities of the spheres `(σ_1//σ_2 )` is ______.
