Correct option is D
Sol: The correct answer is (d) Copper
Key Points:
Copper: Copper is widely used for electrical transmission lines due to its excellent electrical conductivity, ductility, and relatively low cost. It allows for efficient transmission of electricity with minimal energy loss.
The melting point of copper is 1,984°F (1,085°C).
Copper boils at 5,200°F (2,870°C).
Copper plays an important biological role in the human body. It is involved in the production of hemoglobin, collagen, and enzymes.
Copper is a critical component in solar panels, wind turbines, and electric vehicles, contributing to the advancement of green technology
Information booster:
- Tungsten: While tungsten has high melting point and strength, it is not used for electrical transmission lines because its electrical conductivity is much lower than that of copper. It is typically used in applications like light bulb filaments.
- Nichrome: Nichrome is an alloy of nickel and chromium. It is used for its high resistance properties and ability to withstand high temperatures. It is commonly used in heating elements, not in electrical transmission lines.
- Tin-lead alloy: This alloy is mainly used for soldering purposes due to its low melting point. It does not have the necessary electrical conductivity or mechanical properties for use in electrical transmission lines
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