Which one of the following is an electric conductor ?

June 1, 2025 by rawan239

Which one of the following is an electric conductor ?

[amp_mcq option1=”A plastic sheet” option2=”Distilled water” option3=”Human body” option4=”A wooden thin sheet” correct=”option3″]

This question was previously asked in

UPSC CDS-1 – 2021

Download PDF Attempt Online

An electric conductor is a material that allows electric current to flow through it easily. Plastic and wood are electrical insulators, meaning they resist the flow of electricity. Distilled water is a very poor conductor of electricity because it contains very few ions. The human body contains various salts dissolved in water, which provide ions that can carry electric charge, making the human body a conductor of electricity.

Conductors allow charge flow, insulators resist it. The presence of free charge carriers (like ions in solutions or free electrons in metals) determines conductivity.

Metals like copper and aluminum are excellent conductors. Pure water is a poor conductor; its conductivity increases significantly with dissolved impurities (salts, acids, bases) that form ions.

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