Copper isn't cheap, and a significant part of the cost of the motor will be the mass of the copper. You might be able to get more torque for the same cost by using thinner wire, and wrapping up more coils of it. 12 gauge wire has a diameter of 2.05232 mm, and 20 gauge wire has a diameter of 0.8128 mm. How many more coils could you get for the same total mass if you use 20 gauge wire
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**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z
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Copper isn't cheap, and a significant part of the cost of the motor will be the mass of the copper....
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