Polarity of an electromagnet can be changed by ________. A) ...

[saraeharris]

Polarity of an electromagnet can be changed by ________.
 
  A) changing the amount of current flow through the coil of wire
  B) changing the frequency of the current flow through a coil of wire
  C) changing the direction of current flow through the coil of wire

Question 2

The strength of the field of ________ can be changed easily.
 
  A) an electromagnet B) a permanent magnet C) a dipole

[Dominic]

Answer to Question 1

C

Answer to Question 2

A

[saraeharris]

Great answer, keep it coming

[JaynaD87]

Thanks for the timely response, appreciate it