Question you have a 25m long copper wire you want to make, Ask an Expert

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Question: You have a 2.5m long copper wire. You want to make an N-turn current loop that generates a 1.9mT magnetic field at the center when the current is 1.6A. You must use the entire wire.

Question 1: What will be the diameter of your coil?

Please include each step and the equations you used. Thanks!

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