What is the electric field at the center of the metal ball due only to the charges on the surface of the metal ball? (express your answer in vector form.) < entry field with incorrect answer -244800 , entry field with correct answer 0 , entry field with correct answer 0 > n/c

The electric field is zero inside the metal sphere

Explanation:

Gauss's law says: the net flow on any enclosed surface is equal to the value of the charge inside divided by the electrical permittivity

     E = Q / ε

Where Q is thec charge into the surface.

If we apply this to the metal sphere, all the charge is on the surface, so there is no charge inside, therefore, the electric field is zero

the device is called “ rocket engine”