Consider a metal shell with a hollow region inside (Fig. 18.14). If the shell has a tota...

Consider a metal shell with a hollow region inside (Fig. 18.14). If the shell has a total charge Q, which of the following statements is true? (More than one statement may be correct.)

(a) The electric field is zero inside the hollow part of the shell (e.g., at point A).

(b) The electric potential is zero inside the hollow part of the shell (e.g., at point A).

(c) The electric field is zero in the metal part of the shell (e.g., at point B).

(d) The electric potential is zero in the metal part of the shell (e.g., at point B).

(reference figure 18.14)