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प्रश्न
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संबंधित प्रश्न
Name a device that helps to maintain a potential difference across a conductor.
What do the letters p.d. stand for?
In the circuit shown below:
The potential difference across the 3 Ω resistor is:
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.
Explain the analogy between the flow of charge (or current) in a conductor under a potential difference with the free fall of a body under gravity.
What is the combined resistance of each of the networks between A and B shown in fig. ?
Explain why potential difference is always less than the e.m.f. of a cell?
A 10 m long wire of a particular material is of resistance 5Ω What will be the resistance if the wire is stretched to double its length?
Exercise.
Calculate the amount of charge that would flow in 2 hours through an element of an electric bulb drawing a current of 2.5 A.
Define electric potential and potential difference.
