Fact 1: Amagnet moving in a coil of copper wire can cause an electric current.

Fact 2: Electricity is passed through the copper to magnetize the core.

Given the two facts above, answer the question "what is used with copper to produce current?" with the following options: 
- a prism
 - energy
 - tube
 - two
 - chemicals
 - magnet
 - squeeze
 - coiled


 

      magnet   