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प्रश्न
What do you understand by the term resistance?
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उत्तर
The obstruction offered to the flow of current by the filament or wire is called its electrical resistance.
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संबंधित प्रश्न
State and define the S.I. unit of resistance.
Name the physical quantity of which the unit is volt
The unit of potential difference is :
There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.
Which sphere is at lower potential before electrical contact on the basis of convention?
There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.
What is the potential of the spheres after electrical contact?
How electric current flows in solids?
Assuming that the charges of an electron is 1.6 × 10-19 coulombs, the number of electrons passing through a section of wire per sec, when the wire carries a current of one ampere is:
Draw a diagram showing two bulbs connected in parallel to a dry cell.
What is the SI unit of resistance?
A bulb is connected to a cell. How is the resistance of circuit affected if another identical bulb is connected (i) in series, (ii) in parallel, with the first bulb?
