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Question

A substance with _____ number of free electrons is said to be the good conductor.

A
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B
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C
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D
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Solution

The correct option is B more
Electrical conductivity (EC) is a property that is used to describe how well materials allow electrons to flow. A conductor is a material that has a high electrical conductivity.
Electric current is the flow of electrons in a conductor. In metals, the outer electrons of the atoms belong to a cloud of delocalised electrons. They are no longer firmly held by a specific atom, but instead they can move freely through the lattice of positive metal ions. Normally they move randomly. However, when the wire is connected to a cell, they are pushed away from the negative terminal and drawn to the positive one.The cloud of electrons drifts through the conductor. Therefore, more the number of electrons more the electric current is conducted.
Hence, the material with more electrons is said to be a good conductor.

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