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प्रश्न
What happens to the resistance, as the conductor is made thicker?
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उत्तर
The resistance of a conductor is inversely proportional to the area of cross-section of the conductors. Hence, resistance is inversely proportional to the square of the radius of the conductor.
R ∝ \(\frac{1}{A}\)
R ∝ \(\frac{1}{r^2}\)
When a conductor is made thicker, the radius will be increased and so its resistance will be decreased.
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संबंधित प्रश्न
Assertion (A): Copper is used to make electric wires.
Reason (R): Copper has very low electrical resistance.
Exercise.
The values of current (I) flowing through a resistor for various potential differences V across the resistor are given below. What is the value of resistor?
| I (ampere) | 0.5 | 1.0 | 2.0 | 3.0 | 4.0 |
| V (volt) | 1.6 | 3.4 | 6.7 | 10.2 | 13.2 |
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