L6: Domestic Energy Flashcards
1
Q
What is Energy in terms of Power and time?
A
Energy = Power * time
2
Q
What are the units of domestic energy?
A
Energy (kWh) = Power (kW) * time (h)
3
Q
How do you calculate the cost?
A
Cost = number of units * cost per unit
4
Q
What is the equation of efficiency?
A
Efficiency = useful power output/total power input * 100
