Two large metal plates of area 0.7 m2 face each other. They are 5.1 cm apart and have equal but opposite charges on their inner surfaces. If the magnitude E of the electric field between the plates is 55 N/C, what is the magnitude of the charge on each plate? Neglect edge effects.

Explanation:

The given data is as follows.

    Area (A) = 0.7 .

  Electric field between the plates, (E) = 55 N/C

Since, electric field is related to surface charge density as follows.

Also,    E =

or,        

Therefore, charge will be calculated as follows.

          Q =

             =

             =

             = 341 pC

Thus, we can conclude that magnitude of the charge on each plate is 341 pC.

thermal energy is the answer

there are no components of a physical goal mentioned on the list of choices that you've provided.