GK
ELEMENTS COMPOUNDS SUBSTANCES METALS AND NON METALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Iron
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Glass
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Wood
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Plastic
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Detailed explanation-1: -Iron is a metal and all metals are good conductors of electricity.
Detailed explanation-2: -Iron, copper and aluminium are good conductors of electricity because the electrons in these materials are relatively free and can drift in a given direction when an electric potential is applied to its ends.
Detailed explanation-3: -Copper is a better conductor than iron, which means current can flow easier (with less resistance) through copper. This is an inherent property of a material.
Detailed explanation-4: -Steel is an alloy of iron. It definitely comes in the list of best conductor of electricity.
Detailed explanation-5: -Silver is the best conductor of electricity but copper is used instead of silver for making wires.