Question : Which of the following is not a conductor?
Option 1: Hard rubber
Option 2: Copper
Option 3: Silver
Option 4: Nickel
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Correct Answer: Hard rubber
Solution : The correct answer is Hard rubber .
Hard rubber is not a conductor of electricity. It is an insulator or non-conductor of electricity. Rubber, especially hard rubber, does not allow the flow of electric current and is used in various electrical applications to insulate and protect conductive components from contact with each other. In contrast, copper, silver, and nickel are all conductors of electricity commonly used in electrical and electronic circuits.
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