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प्रश्न
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उत्तर
According to Ohm's law, the current flowing in a conductor is directly proportional to the potential difference across its ends provided the physical conditions and temperature of conductor remains constant.
Limitations of Ohm's law:
1. Ohm's law does not apply to conductors such as diode, radio valves, metal rectifiers, where electricity passes through gases.
2. Ohm's law is applicable only when the physical conditions remain constant.
3. Ohm's law is applicable only when the temperature of the conductor is constant.
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संबंधित प्रश्न
Find the resistance of a conductor if 0.24 A current is passing through it and a potential difference of 24 V is applied across it.
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bulbs are connected in series to a 200V supply, how much current will flow through them?
Name the law which is illustrated by the above V−I graph.
The unit of electrical resistance is:
(a) ampere
(b) volt
(c) coulomb
(d) ohm
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(i) Metal and
(ii) Semiconductor ?
State the limitations of Ohm’s law.
State microscopic form of Ohm’s law.
The variable resistance is called ____________.
Consider a current carrying wire (current I) in the shape of a circle. Note that as the current progresses along the wire, the direction of j (current density) changes in an exact manner, while the current I remain unaffected. The agent that is essentially responsible for is ______.
