3) You and a friend are studying for a final and the session goes until the earl

Question

3) You and a friend are studying for a final and the session goes until the early morning. About 4 AM you decide to cook some breakfast. Despite being sleepy, things are going well. The waffles are cooking and the coffee is perking. Should you make some toast now? The 1000-watt waffle iron and the 600-watt coffee maker are plugged into kitchen wall electrical outlets. You will also use a kitchen wall outlet for the toaster. The kitchen wall outlets are all part of the same 110-V circuit which has a 20-A circuit breaker (with negligible resistance) to protect the wire carrying the largest current from getting too hot. (Some homes have fuses to do the same job). You know that if you plug in too many appliances you will overload the circuit breaker. The toaster label says that its power output is 700 watts.

Explanation / Answer

total power consumed if toaster is ON

P=1000+600+700 =2300 Watts

load current

I=P/V =2300/110 =20.9Amp

no you should toast because load current is greater than rated current of circuit breaker.

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