Class 7 Exam > Class 7 Questions > Which of the following materials will not con...
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Which of the following materials will not conduct electric current?
- a)Copper
- b)Aluminium
- c)Plastic
- d)Iron
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which of the following materials will not conduct electric current?a)C...
Plastic is an insulator and does not conduct electricity, unlike copper, aluminum, and iron, which are conductors.
Most Upvoted Answer
Which of the following materials will not conduct electric current?a)C...
Understanding Conductivity
Electric conductivity refers to a material's ability to allow electric current to flow through it. Different materials have varying levels of conductivity based on their atomic structure.
Conductors vs. Insulators
- Conductors: Materials that allow the flow of electric current, such as metals.
- Insulators: Materials that do not conduct electricity, preventing the flow of current.
Materials Listed
- Copper: A highly efficient conductor, commonly used in electrical wiring.
- Aluminium: Another good conductor, often used in power cables and transmission lines.
- Plastic: A strong insulator, used to cover wires and prevent accidental electric shocks.
- Iron: A decent conductor, though not as efficient as copper or aluminium.
Why Plastic Does Not Conduct Electricity
- Molecular Structure: Plastic is made up of long chains of polymers that do not have free electrons. This lack of free electrons means that electric current cannot flow through it.
- Insulating Properties: Because of its structure, plastic effectively inhibits the movement of electric charges, making it an excellent insulator.
Conclusion
In summary, while copper, aluminium, and iron can conduct electricity, plastic stands out as a non-conductive material due to its insulating properties. This characteristic makes plastic invaluable in electrical applications where safety is a concern.
Electric conductivity refers to a material's ability to allow electric current to flow through it. Different materials have varying levels of conductivity based on their atomic structure.
Conductors vs. Insulators
- Conductors: Materials that allow the flow of electric current, such as metals.
- Insulators: Materials that do not conduct electricity, preventing the flow of current.
Materials Listed
- Copper: A highly efficient conductor, commonly used in electrical wiring.
- Aluminium: Another good conductor, often used in power cables and transmission lines.
- Plastic: A strong insulator, used to cover wires and prevent accidental electric shocks.
- Iron: A decent conductor, though not as efficient as copper or aluminium.
Why Plastic Does Not Conduct Electricity
- Molecular Structure: Plastic is made up of long chains of polymers that do not have free electrons. This lack of free electrons means that electric current cannot flow through it.
- Insulating Properties: Because of its structure, plastic effectively inhibits the movement of electric charges, making it an excellent insulator.
Conclusion
In summary, while copper, aluminium, and iron can conduct electricity, plastic stands out as a non-conductive material due to its insulating properties. This characteristic makes plastic invaluable in electrical applications where safety is a concern.
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Question Description
Which of the following materials will not conduct electric current?a)Copperb)Aluminiumc)Plasticd)IronCorrect answer is option 'C'. Can you explain this answer? for Class 7 2025 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Which of the following materials will not conduct electric current?a)Copperb)Aluminiumc)Plasticd)IronCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following materials will not conduct electric current?a)Copperb)Aluminiumc)Plasticd)IronCorrect answer is option 'C'. Can you explain this answer?.
Which of the following materials will not conduct electric current?a)Copperb)Aluminiumc)Plasticd)IronCorrect answer is option 'C'. Can you explain this answer? for Class 7 2025 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Which of the following materials will not conduct electric current?a)Copperb)Aluminiumc)Plasticd)IronCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following materials will not conduct electric current?a)Copperb)Aluminiumc)Plasticd)IronCorrect answer is option 'C'. Can you explain this answer?.
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