You are presented with the question "what is used with copper to produce current?" and the following answer choices: 
- a prism
 - energy
 - tube
 - two
 - chemicals
 - magnet
 - squeeze
 - coiled

Now knowing that amagnet moving in a coil of copper wire can cause an electric current and electricity is passed through the copper to magnetize the core, choose the best answer.


 

      magnet   