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?

Why do metals have a large number of free electrons ?

Why do metals have a large number of free electrons?

When the free electrons are moving in all ossible directions, the value of the current proeduced is _________

A long straight wire AB carries a current I. A proton P travels with a speed v, parallel to the wire , at a distance d from it in a direction opposite to the current as shown in figure what is the force experienced by the proton and what is its direction?