(Solved): what diameter is copper wire The wiring in a house must be thick enough so it does not become so hot ...

The wiring in a house must be thick enough so it does not become so hot as to start a fire. What diameter must a copper wire be it it is to carry a maximum current of \( 30 \mathrm{~A} \) and produce no more than \( 1.6 \mathrm{~W} \) of heat per meter of length? Express your answer using two significant figures.