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Electricity and Magnetism — PHYSICS STD 7 — Question

ICSE BoardEnglish MediumSTD 7PHYSICSElectricity and Magnetism2 Marks
Question
Why are free electrons called so ?
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Answer

Atoms of most metals contain very loosely bound negatively charged electrons in their outermost orbits. These electrons can be knocked out easily and hence are called free electrons as these free electrons move randomly in all directions in a material.

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