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Question
On what factors does the resistance of conductor depends ?
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Solution
The resistance of a conductor is dependent on the following factors:
- Length: Resistance is directly proportional to the length of the conductor. So as the length increases the value of resistance increases.
- Cross-sectional area: Resistance is inversely proportional to the cross-sectional area of the conductor. So as the cross-sectional area increases the value of resistance decreases.
- Resistivity: Resistance depends upon resistivity which is a proportionality constant and depends on the nature of substance and temperature. It is inversely proportional to resistance.
- Temperature: As the temperature increases, the value of resistivity increases and so resistance increases.
The resistance of a conductor is dependent on the following factors:
- Length: Resistance is directly proportional to the length of the conductor. So as the length increases the value of resistance increases.
- Cross-sectional area: Resistance is inversely proportional to the cross-sectional area of the conductor. So as the cross-sectional area increases the value of resistance decreases.
- Resistivity: Resistance depends upon resistivity which is a proportionality constant and depends on the nature of substance and temperature. It is inversely proportional to resistance.
- Temperature: As the temperature increases, the value of resistivity increases and so resistance increases.
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