Transcript Electricity 5 Power/Safety

Electricity Notes 5
•Electric Power – the rate at
which
_______________________
Work is done
•the rate at which
electric energy
_____________________
is
converted into another form of
energy
light
heat
Etc.
(__________,___________,____)
Electrical Power
voltage
current
• electrical power = __________
x ____________
# of electrons ) x
• electrical power = (___________
Force to move e(______________)
IxV
• P= __________
1 amp x 1 volt
• 1 Watt = __________________
• Kilowatt-hour = amount of energy consumed in
1 hour at the rate of 1 kilowatt
_________________________________
Safety
Lines that carry more than a safe
• Overload – __________________________________
amount of current could melt & start a fire.
_____________________________________________
Caused by a fault (break) in
• Short Circuit – _______________________________
the wires insulation. (cause fire)
_____________________________________________
Wire that melts and breaks a circuit if
• Fuse – _____________________________________
too much current is flowing. (protects house)
_____________________________________________
Switch that opens a circuit if
• Circuit Breakers – ____________________________
too
much current is flowing. (magnetic; protects house)
_____________________________________________