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प्रश्न
Give a scientific reason:
For electric power transmission, copper or aluminium wire is used.
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उत्तर
- Copper and aluminium have very low resistivity, hence less resistance for long wires.
- Low resistance causes less I2R heat loss, so energy loss is reduced.
- Both are good conductors that allow large currents to pass safely.
- Aluminium is lighter and cheaper, copper has higher conductivity; both are ductile and can be drawn into long wires.
Therefore, copper or aluminium wires are used to transmit electricity.
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संबंधित प्रश्न
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| P | `6.84xx10^8`Ωm |
| Q | `1.70xx10^8`Ωm |
| R | ` 1.0xx10^15`Ωm |
| s | `11.0xx10^-7`Ωm |
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