When an electrical circuit is working properly , electrical current runs through that circuit, and currently computers run on electric circuits and wires. Given these facts, computers run when what is working properly among the following options:
- metal forks
 - an engine
 - lowered energy cost
 - deoxyribonucleic acid
 - plastic switches
 - objects that have mass
 - power ballads
 - electrical circuit


 

        electrical circuit 