What is Electrical power?
It is the rate at which an appliance uses electrical energy⚡
True or False
Robots, Basketball, iPhone require phantom loads.
FALSE
Microwaves, power adapters and Clock displays require phantom loads.
What is the ratio of an electrical device of efficiency?
Efficiency= useful energy output/ total energy input times 100%
Lost -💯 points
How much Watts?
1 kW =
1000 W
What is the particle unit of electrical energy?
kilowatt-hour (kWh)
Gained 200 points :)
How much work, or energy, you lose to heat determines EFFICIENCY.
TRUE
How is the cost of electrical energy calculated?
It is calculated by multiplying the amount of energy that is used in kilowatt-hour by the price in ¢ / kilowatt-hour
Lost 200, sorry 🙏
The electrical power of an appliance is the rate at which it uses...........
electrical energy
What is the equation for electric power?
power = current × voltage
Gained 100 points
The unit of electrical energy....
joule (j) is the unit of energy
True/False
Any office appliance in Canada that is sold to a customer must have an EnerGuide LabelFalse its household appliance
TRUE/FALSE
The power of a toaster is the rate at which the toaster converts electricity into heat
TRUE
Lost 100 points
True/ False
The efficiency of a device equals the number of joules that comes out multiplied by the useful energy put in
False
Kinetic energy collectors absorb the sun’s radiant energy to heat up water, which then creates electrical energy.
False
LOST 400 POINTS 😂