Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > (A): A superconductor is a perfect diamagneti...
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(A): A superconductor is a perfect diamagnetic material.
(R): A superconductor is a perfect conductor.
(R): A superconductor is a perfect conductor.
- a)Both A and R are true and R is a correct explanation of A
- b)Both A and R are true but R is not a correct explanation of A
- c)A is true but R is false
- d)R is false but R is true
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
(A): A superconductor is a perfect diamagnetic material.(R): A superco...
Statement A states that a superconductor is a perfect diamagnetic material. This statement is true. Diamagnetism is a property exhibited by certain materials that causes them to create an opposing magnetic field when subjected to an external magnetic field. Superconductors, in their superconducting state, exhibit perfect diamagnetism, meaning they completely expel magnetic fields from their interior. This is known as the Meissner effect, which is a characteristic behavior of superconductors.
Statement R states that a superconductor is a perfect conductor. This statement is false. While superconductors have zero electrical resistance below their critical temperature, which allows for the flow of electrical current without any significant loss of energy, this does not imply that they are perfect conductors. Perfect conductors, by definition, have zero resistance at all temperatures, whereas superconductivity is a specific phenomenon that occurs at low temperatures.
Therefore, statement A is true as superconductors are indeed perfect diamagnetic materials. However, statement R is false as superconductors are not considered perfect conductors.
Hence, the correct answer is c. A is true but R is false.
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(A): A superconductor is a perfect diamagnetic material.(R): A superco...
Introduction:
This question is related to the properties of superconductors. Superconductors are materials that can conduct electric current without any resistance when cooled below a certain critical temperature. They exhibit unique properties such as perfect diamagnetism and zero electrical resistance.
Explanation:
- Statement A: "A superconductor is a perfect diamagnetic material."
- Statement R: "A superconductor is a perfect conductor."
Statement A: A superconductor is a perfect diamagnetic material.
- Diamagnetism is a property exhibited by all materials to some degree. When a material is placed in a magnetic field, it generates an induced magnetic field in the opposite direction, causing repulsion from the external magnetic field. Superconductors, however, exhibit perfect diamagnetism, which means they completely expel the magnetic field from their interior. This expulsion of the magnetic field is a characteristic property of superconductors.
Statement R: A superconductor is a perfect conductor.
- This statement is not a correct explanation of Statement A. While it is true that superconductors can conduct electric current without any resistance, it does not directly explain why they are perfect diamagnetic materials. The perfect diamagnetic behavior of superconductors is a consequence of the Meissner effect, which occurs when a superconductor expels magnetic fields from its interior. This expulsion is due to the formation of superconducting currents near the surface of the material that exactly cancel out the applied magnetic field.
Conclusion:
In conclusion, both Statement A and R are true. However, Statement R is not a correct explanation of Statement A. A superconductor is a perfect diamagnetic material due to the Meissner effect, where it expels the magnetic field from its interior by forming superconducting currents near the surface. The perfect conductivity of superconductors is a separate property that allows them to carry electric current without any resistance.
This question is related to the properties of superconductors. Superconductors are materials that can conduct electric current without any resistance when cooled below a certain critical temperature. They exhibit unique properties such as perfect diamagnetism and zero electrical resistance.
Explanation:
- Statement A: "A superconductor is a perfect diamagnetic material."
- Statement R: "A superconductor is a perfect conductor."
Statement A: A superconductor is a perfect diamagnetic material.
- Diamagnetism is a property exhibited by all materials to some degree. When a material is placed in a magnetic field, it generates an induced magnetic field in the opposite direction, causing repulsion from the external magnetic field. Superconductors, however, exhibit perfect diamagnetism, which means they completely expel the magnetic field from their interior. This expulsion of the magnetic field is a characteristic property of superconductors.
Statement R: A superconductor is a perfect conductor.
- This statement is not a correct explanation of Statement A. While it is true that superconductors can conduct electric current without any resistance, it does not directly explain why they are perfect diamagnetic materials. The perfect diamagnetic behavior of superconductors is a consequence of the Meissner effect, which occurs when a superconductor expels magnetic fields from its interior. This expulsion is due to the formation of superconducting currents near the surface of the material that exactly cancel out the applied magnetic field.
Conclusion:
In conclusion, both Statement A and R are true. However, Statement R is not a correct explanation of Statement A. A superconductor is a perfect diamagnetic material due to the Meissner effect, where it expels the magnetic field from its interior by forming superconducting currents near the surface. The perfect conductivity of superconductors is a separate property that allows them to carry electric current without any resistance.
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(A): A superconductor is a perfect diamagnetic material.(R): A superconductor is a perfect conductor.a)Both A and R are true and R is a correct explanation of Ab)Both A and R are true but R is not a correct explanation of Ac)A is true but R is falsed)R is false but R is trueCorrect answer is option 'C'. Can you explain this answer?
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