Because the electrons collide with the particles inside the conductor so are therefore slowed down seen as current is the rate of flow of electrons
Metals are giant structures of atoms held together by metallic bonds. “Giant” implies that large but variable numbers of Atoms are involved - depending on the size of the bits of metal. most metals are close packed - that is, they fit as many items as possible into the available volume.
Cardio respiratory endurance, muscular strength, muscular endurance
