Formulas Flashcards
formula for current
current, power, voltage
current = power / voltage
formula for work done
work done, time, power
work done = power x time
formula for voltage
current, power, voltage
voltage = power / current
unit for power
watts (W) or kilowatts (kW)
symbol for current
I
unit for current
amps (A)
symbol for power
P
symbol for voltage
V
unit for voltage
volts (V)
formula for power
current, power, voltage
power = current x voltage
formula for power
work done, time, power
power = work done / time
formula for time
work done, time, power
time = work done / power
unit for work done
kilowatt-hours (kWh) or units
unit for time
seconds (s), minutes (m), or hours (h)
symbol for time
t
symbol for work done
E
formula for cost
work done, cost, cost per unit
cost = work done x cost per unit
one unit of energy is the same as…
one kilowatt of energy
formula for cost per unit
work done, cost, cost per unit
cost per unit = cost / work done
formula for work done
work done, cost, cost per unit
work done = cost / cost per unit
one kilowatt is the same as…
one unit of energy
unit for cost
pence or pounds
formula for current
current, charge, time
current = charge /time
formula for charge
current, charge, time
charge = current x time
