What does inform, persuade, and entertain mean? Explain in your own words.

To inform means to teach or show someone how something works. To persuade means to get someone to join or believe in the same thing as you. To entertain means to make someone or the viewer of reader enjoy the passage or event.

Explanation:

may i see the historical information and the excerpt?

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).