Fact 1: Magnetism can cause objects to repel each other.

Fact 2: Electrical currents cause magnetic fields.

Given the two facts above, answer the question "Which of the following can cause objects to repel each other?" with the following options: 
- electromagnetic energy
 - mass
 - Electrical energy
 - gravitation
 - electrical currents
 - photosynthesis
 - the Great Barrier Reef
 - electricity


 

     electrical currents    