Electrical Power

Phantom Loads

Efficiency

Electrical Energy

SuperEasy!! ☺

100

What is Electrical power?

It is the rate at which an appliance uses electrical energy⚡

100

True or False

Robots, Basketball, iPhone require phantom loads.

FALSE

Microwaves, power adapters and Clock displays require phantom loads.

100

What is the ratio of an electrical device of efficiency?

Efficiency= useful energy output/ total energy input times 100%

100

Lost -💯 points

100

How much Watts?

1 kW =

** 1000 W**

200

What is the particle unit of electrical energy?

kilowatt-hour (kWh)

200

Gained 200 points :)

200

How much work, or energy, you lose to heat determines EFFICIENCY.

TRUE

200

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

200

Lost 200, sorry 🙏

300

The electrical power of an appliance is the rate at which it uses...........

**electrical energy **

300

What is the equation for electric power?

power = current × voltage

300

Gained 100 points

300

The unit of electrical energy....

joule (j) is the unit of energy

300

True/False

Any office appliance in Canada that is sold to a customer must have an EnerGuide LabelFalse its household appliance

400

TRUE/FALSE

The power of a toaster is the rate at which the toaster converts electricity into heat

**TRUE **

400

Lost 100 points

400

True/ False

The efficiency of a device equals the number of joules that comes out multiplied by the useful energy put in

False

400

Kinetic energy collectors absorb the sun’s radiant energy to heat up water, which then creates electrical energy.

False

400

LOST 400 POINTS 😂

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