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प्रश्न
Which of the following is an ohmic resistance?
पर्याय
LED
Junction diode
Filament of a bulb
Nichrome wire
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उत्तर
Nichrome wire
Hint: Substances that obey Ohm's law are called Ohmic resistors.
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संबंधित प्रश्न
State Ohm’s law and draw a neat labelled circuit diagram containing a battery, a key, a voltmeter, an ammeter, a rheostat and an unknown resistance to verify it.
What is the necessary condition for a conductor to obey Ohm’s law?
In an experiment of verification of Ohm’s law following observations are obtained.
|
Potential difference V (in volt) |
0.5 | 1.0 | 1.5 | 2.0 | 2.5 |
| current I (in ampere) | 0.2 | 0.4 | 0.6 | 0.8 | 1.0 |
Draw a V-I graph and use this graph to find:
- the potential difference V when the current I is 0.5 A,
- the current I when the potential difference V is 0.75 V,
- the resistance in a circuit.
Calculate the effective resistance across AB?
Fig. represents the circuit used for the verification of ohm's law. Label the different parts from A and F. State the function of each.
What are ohmic conductors? Give one exmaple. Draw a graph showing the current-voltage relationship for an ohmic conductor.
Ohm’s law states the relationship between power and voltage.
State microscopic form of Ohm’s law.
State macroscopic form of Ohm’s law.
What is meant by resistance of a conductor ? Define its SI unit.
