electricity equations Flashcards
1
Q
equation for energy:
A
energy = power x time
2
Q
energy is measured in:
A
joules (joules per coulomb)
3
Q
power is expressed in:
A
watts
4
Q
equation for power:
A
power = energy/time
5
Q
(electrical) power:
A
power = current x voltage (P = I x V)
6
Q
charge:
A
charge = current x time (Q = I x T) (c = a x s)
7
Q
equation for resistance
A
voltage = current x resistance ( resistance = voltage/ current)
8
Q
equation for energy transferred:
A
energy transferred = voltage x current x time ( E=V x I x T)
