A copper wire has a diameter of 1.647 mm. What magnitude current flows when the drift velocity is 1.39 mm/s? Take the density of copper to be 8.92*103 kg/m3.
____________A
2. As part of a class project you are given 0.900 g of copper and asked to fabricate a wire with uniform cross-section. You use up 95% of the copper and make a wire with a resistance of 0.793? The resistivity of copper is 1.72*10-8 · m and its density is 8.92*103 kg/m3.
1) What is the diameter of the wire?
________mm
2) What length of wire do you end up with?
________ m