Problem you have a 20m long copper wire you want to make an, Ask an Expert

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Problem: You have a 2.0m long copper wire. You want to make an N-turn current loop that generates a 2.0mT magnetic field at the center when the current is 1.6A. You must use the entire wire.

Part A: What will be the diameter of your coil?

Please show all work and clearly explain this problem. Thanks in advance.

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