Which of the following is a good conductor of electricity?

Air

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Wood

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Plastic

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Human body

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Solution

The correct option is D
Human body

A conductor is a material that allows electricity to flow through it. A flow of charges and ions constitute an electric current.
As human body cells contain various ions like sodium ion, chloride ion etc, they conduct electricity and this makes our body a good conductor of electricity. Whereas wood, rubber and plastic do not contain ions or free electrons hence they don't conduct electricity.

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Q. Which of the following groups of materials contain only conductors?
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State True or False :

Human body is a good conductor of electricity.

Q. Which of the following statements are correct?

(i) Human body is a good conductor of electricity.
(ii) The air gap surrounding an electric circuit acts as a conductor.
(iii) Silver conducts electricity better than any other metal.
(iv) When electricity lights up a bulb, no heat is produced.

Q. Humans are good conductors of electricity . Justify.
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