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प्रश्न
What are ohmic conductors? Give one exmaple. Draw a graph showing the current-voltage relationship for an ohmic conductor.
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उत्तर
The conductors which obey Ohm’s law (i.e., V/I is constant) are called ohmic conductors.
Example: Silver.
A graph showing the current-voltage relationship for a ohmic conductor is shown in the figure.
संबंधित प्रश्न
An electric bulb draws 1.2 A current at 6.0 V. Find the resistance of filament of bulb while glowing.
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.
Two metallic spheres A and B kept on insulating stands are in contact with each other. A positively charged rod P is brought near the sphere A as shown in the figure. The two spheres are separated from each other, and the rod P is removed. What will be the nature of charges on spheres A and B?
State and define Ohm’s law.
SI unit of resistance is:
The ratio of the potential difference to the current is known as ________.
Explain the equivalent resistance of a series resistor network.
Ohm's law deals with the relationship between ______
State Ohm's Law. Represent it mathematically.
A current of 0.8 A flows in a conductor of 40 Ω for 1 minute. The heat produced in the conductor will be ______.
