A 20m length of metal wire is connected to a 15 v battery


A 2.0m length of metal wire is connected to a 1.5 V battery, and a current of 5.0mA flows through it. What is the diameter of the wire? (The resistivity of metal is 2.24×10?8??m.)

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Physics: A 20m length of metal wire is connected to a 15 v battery
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