The copper wires in the walls of your home can get hot enough to start a fire if

Question

The copper wires in the walls of your home can get hot enough to start a fire if the current through them is too great. For this reason, "circuit breakers" have been included in the wiring. A circuit breaker is made of conducting material and has a shape that depends on temperature. At low temperatures, the breaker bridges a gap in the circuit, allowing current to flow. At high enough temperatures, the shape changes enough that the gap is no longer bridged, so current cannot flow. Suppose that a 2000-watt microwave is cooking your soup, but you also would like to use a 1000-watt toaster to make some toast. If the current in this circuit all flows through a circuit breaker with a 30-amp limit, can you use both appliances simultaneously?

Explanation / Answer

P = V*I = 120 * 30 = 3600

hence you can use them both

V= 120v for US houses

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