When a current is established in a wire, the free electrons drift in the direction opposite to the current, Does the number of free electrons in the wire continuously decrease?

In diamond, the number of free electrons are:

What is meant by drift speed of free electrons ?

When electrons drift in a metal from lower to higher potential, does it mean that all the free electrons of the metal are moving in the same direction ?

Predict the direction of induced current in metal rings 1 and 2 when current I in the wire is steadily decreasing .

In an electrolytic solution the electric current is mainly due to the movement of free electrons.

When two wires have current in same direction then force is

A small insect crawls in the direction of electron drift along bare copper wire that carries a current of 2.56A. It travels with the drift speed of the electron in the wire of uniform cross-section area 1mm^2 Number of free electrons for copper = 8 times 10^28// cc and resistivity of copper = 1.6 times 10^-8 Omega m How much time would the insect take to crawl 1.0 cm if it crawls at the drift speed of the electron in the wire?

Define relaxation time of the free electrons drifting in conductor. How is it related to the drift velocity of free electrons? Use this relation to deduce the expression for the electrical resistivity of the material.

A circular loop is placed near a current carrying conductor as shown in figure. Find the direction of induced current, if the current, in the wire is decreasing.

Consider a long, straight wire of cross-sectional area A carrying a current i. Let there be n free electrons per unit volume. An observed places himself on a trolley moving in the direction opposite to the current with a moving in the direction opposite to the current with a speed (v= i/nAe) and separated from the wire by a distance r. The magnetic field seen by the observer is very nearly