solved in periods of peak 4 www.webassign.net/web/student/Assignment Responses/s
ID: 1552516 • Letter: S
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solved in periods of peak 4 www.webassign.net/web/student/Assignment Responses/submitrdep 1598se38 Da e Search An electric iron connected to a 110 v source draws 9 A of current. How much heat (in joules) does it generate in a minute? Mr Notes B. O points l Previtur Answers Hewitt 23E051 In periods of peak demand, power companies lower their voltage. This saves them power (and saves you money), To see the effect, consider a 1200 w toaster that draws 10 A when connected to 120 V suppose the voltage is lowered by S% to 114 v. By how much does the current decrease? By how much does the power decrease? (Caution: The 1200 w label is vaid only when 120 Vis applied. When the voltage is lowered, it is the resistance of the toaster, not its power, that remains constant.) 9 11 points I Previous Answers Hewir12 23E o61 one example of a water system is a garden hose that waters a garden. Another is the cooling syst an Jutomoble. which of these exhibits behavior more to that of an electric circuit? The cooling system of an automobile is a better analogy. Then arden hose a better analogyExplanation / Answer
first determine the resistance of a toaster that draws 10 A when connected to 120 V, thus consuming 1200 W of power. Since ohms = volts ÷ amps, the resistance is 12 ohms.
When that same 12- resistance is hooked into a 114-V circuit, it consumes only 9.5 A.
Current decreases from 10 A to 9.5 A that means by 5
A device drawing 9.5 A on a 114-V circuit consumes 1083 W of power, substantially less than the 1200 W it consumes at 120 V.
1200 W to 1083 W power decreases
Power decreases by 9.75 %
A device drawing 9.5 A on a 114-V circuit consumes 1083 W of power, substantially less than the 1200 W it consumes at 120 V.
1200 W to 1083 W power decreases
Power decreases by 9.75 %
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