Question

what is meant by a free electron​

Answer 1

Free electrons : Every atom of a metallic conductor has one or more outermost electrons which are very weakly bound to the nucleus. These are called free electrons. these electrons can easily move from one part of a conductor to its other parts. The negative charge of the electrons also gets transferred as a result of this motion. The free electrons in a conductor are the carriers of negative charge.

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Answer 2

Answer:

In solid-state physics, the free electron model is a simple model for the behaviour of charge carriers in a metallic solid.

Explanation:

an electron within a conducting substance (as a metal) but not permanently attached to any atom. 2 : an electron moving in a vacuum.