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प्रश्न
Name a device which helps to maintain potential difference across a conductor (say, a bulb).
उत्तर
A cell or a battery helps to maintain potential difference across a conductor.
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संबंधित प्रश्न
What is meant by saying that the potential difference between two points is 1 V?
Name the law which relates the current in a conductor to the potential difference across its ends.
What is Ohm's law? Explain how it is used to define the unit of resistance.
Calculate the power used in the 2 Ω resistor in each of the following circuits: a 6 V battery in series with 1 Ω and 2 Ω resistors.
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.
If P and V are the power and potential of device, the power consumed with a supply potential V1 is:
Assertion (A): Charges flow from higher potential to lower potential.
Reason (R): Current flows mainly due to the flow of electrons.
Define Electric potential.
Name a device that helps to maintain a potential difference across conductors.
