Energy and Power in Circuits Flashcards
1
Q
what is an electric circuit
A
closes loop which current can flow continuously through.
2
Q
parts of electric circuit
A
device that gives energy to electrons (battery)
one or more devices that use energy - sometimes referred to as the load (lamp, motor)
pathway which electrons can travel (wire, circuit board)
3
Q
what happens in electrical circuits
A
electrical energy is transformed into other forms of energy
4
Q
formula for Volts
A
Energy/charge = voltage
5
Q
formula for current
A
charge/time(sec)
6
Q
formula for energy
A
E(J) = V x current x t(sec)
7
Q
formula for power
A
Power = Energy/time
P = V x I
P = (V x I x Time)/Time
8
Q
A
