click below
click below
Normal Size Small Size show me how
Science chapter 6
Lesson 4
Term | Definition |
---|---|
How do you calculate electric power? | power=voltage x current |
Power | rate at which energy is transformed from one form to annother/ unit is the watt |
How do you calculate electric energy | energy=power x time |
Kilowatt-hours | unit of electric energy / kilowatt x hours |
How can electric shocks be prevented? | shocks can be prevented with devices that redirect current or break circuits |
Short circuit | is a connection that allows current to take the path of least resistance |
Ground wires | connect the circuits in a building directly to earth, giving charges an alternate path in an event of a short circuit |
Third prong | connects any metal pieces in an appliance to the safety grounding wire of a building |
Fuses | are devices that melt if they get too hot |
Circuit Breakers | are switches that will bend away from circuits as they heat up / can reset |
Grounded | any circuit connected to earths with a third prong |