List three ways you can use an electric current. describe the energy chang that takes place

Three ways you can use an electric current:
1. in a battery to power a flashlight or other devices
2. to produce heat
3. using a power tool
4. chargers
 
If the two requirements of an electric circuit are met, then charge will flow through the external circuit. Causing a  flow of electric charge to power any machine or device, etc.