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The best conductor of electricity among the following is:
- a)coal
- b)iron
- c)aluminum
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
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The best conductor of electricity among the following is:a)coalb)ironc...
Introduction:
The best conductor of electricity among the given options is aluminum. This can be attributed to several factors that make aluminum an excellent conductor of electricity.
Factors contributing to aluminum's conductivity:
1. Electrical conductivity: Aluminum possesses a high electrical conductivity, allowing electric charges to flow through it easily. It has approximately 61% of the electrical conductivity of copper, which is considered the standard for electrical conductivity.
2. Low resistivity: Aluminum has a low resistivity, which is the measure of a material's opposition to the flow of electric current. The lower the resistivity, the better the material conducts electricity. Compared to other materials like coal and iron, aluminum has significantly lower resistivity.
3. Free electrons: Aluminum has a large number of free electrons. Free electrons are loosely bound to the atoms in a material and can move freely, facilitating the flow of electric current. In aluminum, the presence of numerous free electrons contributes to its high electrical conductivity.
4. Lightweight: Aluminum is a lightweight metal, making it a preferred choice for electrical conductors. Its low density allows for the construction of lightweight and efficient electrical transmission systems, reducing the overall weight and cost of installations.
5. Corrosion resistance: Aluminum has excellent corrosion resistance due to the formation of a thin oxide layer on its surface. This oxide layer acts as a protective barrier, preventing further oxidation and ensuring the longevity of the conductor. Corrosion can significantly affect the conductivity of a material, but aluminum's resistance to corrosion allows for reliable and durable electrical connections.
Conclusion:
In conclusion, aluminum is the best conductor of electricity among the given options. Its high electrical conductivity, low resistivity, abundance of free electrons, lightweight nature, and corrosion resistance make it an ideal choice for various electrical applications.
The best conductor of electricity among the given options is aluminum. This can be attributed to several factors that make aluminum an excellent conductor of electricity.
Factors contributing to aluminum's conductivity:
1. Electrical conductivity: Aluminum possesses a high electrical conductivity, allowing electric charges to flow through it easily. It has approximately 61% of the electrical conductivity of copper, which is considered the standard for electrical conductivity.
2. Low resistivity: Aluminum has a low resistivity, which is the measure of a material's opposition to the flow of electric current. The lower the resistivity, the better the material conducts electricity. Compared to other materials like coal and iron, aluminum has significantly lower resistivity.
3. Free electrons: Aluminum has a large number of free electrons. Free electrons are loosely bound to the atoms in a material and can move freely, facilitating the flow of electric current. In aluminum, the presence of numerous free electrons contributes to its high electrical conductivity.
4. Lightweight: Aluminum is a lightweight metal, making it a preferred choice for electrical conductors. Its low density allows for the construction of lightweight and efficient electrical transmission systems, reducing the overall weight and cost of installations.
5. Corrosion resistance: Aluminum has excellent corrosion resistance due to the formation of a thin oxide layer on its surface. This oxide layer acts as a protective barrier, preventing further oxidation and ensuring the longevity of the conductor. Corrosion can significantly affect the conductivity of a material, but aluminum's resistance to corrosion allows for reliable and durable electrical connections.
Conclusion:
In conclusion, aluminum is the best conductor of electricity among the given options. Its high electrical conductivity, low resistivity, abundance of free electrons, lightweight nature, and corrosion resistance make it an ideal choice for various electrical applications.
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The best conductor of electricity among the following is:a)coalb)ironc)aluminumd)None of theseCorrect answer is option 'C'. Can you explain this answer?
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The best conductor of electricity among the following is:a)coalb)ironc)aluminumd)None of theseCorrect answer is option 'C'. Can you explain this answer? for Teaching 2024 is part of Teaching preparation. The Question and answers have been prepared according to the Teaching exam syllabus. Information about The best conductor of electricity among the following is:a)coalb)ironc)aluminumd)None of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Teaching 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The best conductor of electricity among the following is:a)coalb)ironc)aluminumd)None of theseCorrect answer is option 'C'. Can you explain this answer?.
The best conductor of electricity among the following is:a)coalb)ironc)aluminumd)None of theseCorrect answer is option 'C'. Can you explain this answer? for Teaching 2024 is part of Teaching preparation. The Question and answers have been prepared according to the Teaching exam syllabus. Information about The best conductor of electricity among the following is:a)coalb)ironc)aluminumd)None of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Teaching 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The best conductor of electricity among the following is:a)coalb)ironc)aluminumd)None of theseCorrect answer is option 'C'. Can you explain this answer?.
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