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?

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

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?

What is thermal motion of free electrons ? Why does it not amount to any current ?

Drift velocity of free electrons when current passes through the conductor is of the order of

A copper wire of diameter 0.16 cm is connected in series to an aluminium wire of diameter 0.25 cm. A current of 10 A is passed through them. Find (i) current density in the copper wire (ii) drift velocity of free electrons in the aluminium wire. The number of free electrons per unit volume of aluminium wire is 10^(29) m^(-3) .

An electric current of 16 A exists in a metal wire of cross section 10^(-6) m^(2) and length 1 m. Assuming one free electron per atom. The drift speed of the free electrons in the wire will be (Density of metal = 5 xx 10^(3) kg//m^(3) atomic weight = 60)