power, energy and cost of electricity Flashcards
1
Q
kiloWatt = ? Watts
A
1000
2
Q
what is electrical power (P)?
A
how fast the energy is used or the rate of using electricity/ energy
3
Q
how is Electrical Power (P) calculated?
A
Electrical Energy (E) / Time Interval (t)
4
Q
how is Electrical Energy (E) calculated?
A
Electrical Power (P) x Time Interval (t)
5
Q
how is Time Interval (t) calculated?
A
Electrical Energy (E) / Electrical Power (P)
6
Q
what unit is P calculated in?
A
kiloWatt (kW)
7
Q
what unit is E calculated in?
A
kiloWatt hour (kWxh)
8
Q
what unit is t calculated in?
A
hours
9
Q
how is cost of electricity (Cost) calculated?
A
Electrical Energy (E) x Price Rate
