A capacitor consists of two metal plates separated by a small distance. Electrical energy from a battery is needed to charge the metal plates with opposite charges. What happens to the energy of the battery?
A)
It is transformed into mechanical energy,
B)
It is transformed into heat from the moving charges.
C)
It is transformed into chemical potential energy in the battery
D)
It is transformed into electric potential energy between the charged
plates.

a.

explanation:

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