Manga Guide to Electricity One pp 1-36

Manga Guide pp1-36

Questions 

1)Calculate how much it costs to use five common appliances that you use every day in your home for 24 hours. Please let me know the appliance, its wattage, amps and volts of each appliance and how you calculated cost. You will need to go to GRU or look at one of your electric bills.

Price per kWh $0.031/kWh via GRU

-Fan

Wattage 40W

Amps 33A

Volts 120V

40/1000 = 0.04kW 

0.04W x 24h = 0.96kWh

0.96kWh x 0.031 = $0.02976

-TV          

Wattage 223W

Amps 0.1A

Volts 120V

223/1000=0.233kW

0.223kW x 24h = 5.352kWh

5352kWh x 0.031 = $0.165912

-Coffee maker

Wattage 650W

Amps 0.2A

Volts 120V

650/1000=0.65kW

0.65kW x 24h=15.6kWh

15.6kWh x 0.031=$0.4836

-Toaster

Wattage 740W

Amps 0.2A

Volts 110V

740/1000=0.74kW

0.74kW x 24h=17.76kWh

17.76kWh x 0.031= $0.55056

-Washer

Wattage 1200W

Amps 10A

Volts 120V

1200/1000=1.2kW

1.2kW x 24h = 28.8kWh

28.8kWh x 0.031 =$0.8928

2)How many of those appliances can you plug into one outlet without tripping a breaker? Please do this mathematically rather than through direct experience.

The Fan, Toaster, coffee maker and the TV can be on the same outlet but any other thing will go over the limit. Because the average limit for the outlets at my apartment complex is 2400W

3)What is the directional relationship between charge and current?

Electric current is the rate of charge flow past a given point in an electric circuit, measured in Coulombs/second which is named Amperes.