Question: A thin copper rod that is 75 cm long and has a mass of 75 g is sitting in a uniform magnetic field B

A thin copper rod that is 75 cm long and has a

A thin copper rod that is 75 cm long and has a mass of 75 g is sitting in a uniform magnetic field B parallel to the ground. If a current of 3.5 A in the rod cancels out the rod's weight, what is the magnitude of B?

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