Question 1 a 049 copper rod with a mass of 018 carries a, Ask an Expert

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Question 1: A 0.49 copper rod with a mass of 0.18 carries a current of 13 in the positive x direction. Let upward be the positive y direction. What is the magnitude of the minimum magnetic field needed to levitate the rod?

Question 2: A rectangular loop of 260 turns is 33cm wide and 17cm high. What is the current in this loop if the maximum torque in a field of 0.48T is 22N*m ?

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