# 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