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______ is/are usually the best conductor/s.

a. Metals
c. Air
b. Water
d. Minerals Please select the best answer from the choices provided

User Raeanne
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2 Answers

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Metals are the best conductors and insulators.
User DivinusVox
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Answer: Option (a) is the correct answer.

Step-by-step explanation:

Metals are the substances that contain excess of electrons. Therefore, they have mobile electrons which tend to move from one place to another.

As a result, when current or heat is supplied to them they conduct electricity. Hence, metals are good conductors of heat and electricity.

Thus, we can conclude that out of the given options, metals is/are usually the best conductor/s.

User Adrian Solis
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