These are two question i just cant think of an anwser.

For the first question, the answer is "My heart grew sick-on count of the dampness of catacombs." For the second one, it is foreshadowing.

Explanation:

I am sorry if this answer is wrong. I answered it to the best of my ability.

the direction of the magnetic field produced by an electric current will change when the direction of the electric current changes. for example : if a current is flowing in a straight length of wire, the magnetic field is described by a concentric circle (using right-hand rule).