The drift velocity measures the instantaneous speed of the electrons between the collisions they experience in the metal. the drift velocity is very slow, and a typically describes a microscopic displacement over a period of a second. the drift velocity measures the speed of the atomic nuclei drifting through the metal. the drift velocity is very fast and is directly responsible for the short time required an electrical signal to reach a light bulb when you flip a light switch from across the room. the drift velocity measures the rate at which electrons leave the surface of the metal. your answer

what are the options.

explanation:

do you have a formula possibly

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia