What is the relationship between the strength of an electrical current and field strength in an electromagnet?

If you had a chance to change the past would you? why or why not?

How can a speaker best appeal to an audience? a. by revealing just enough information to make the au us b. by allowing the audience to ask questions about the speech's subject matter c. by adapting the speech to the expectations and knowledge of the audience d. by encouraging listeners who disagree to voice their opinions

The town should regulate the height of buildings allowed on main street. this would be categorized as a: a. claim of fact. b. claim of policy. c. claim of cause and effect. d. claim of definition.