A thin 1.80 m long copper rod has a mass of 50.0 g. What is the minimum current needed in the rod to cause it

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A thin 1.80 m long copper rod has a mass of 50.0 g. What is the minimum current needed in the rod to cause it

[From: ] [author: ] [Date: 11-05-27] [Hit: ]

. .. ►= 0.......

it to float in a magnetic field of 3.00 T?

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Using F = BiL [for force on a current carrying conductor in a magnetic field]
(magnetic force required = weight of wire, mg Newtons)

i = F/BL = (50^-3kg*9.8N/kg) / (3.0T)(1.8m) .. .. ►= 0.09 A

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