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A rod of length L and electrical resistance R moves through a constant uniform magnetic field B; both the magnetic field and the direction of motion are parallel to the rod. The force that must be applied by a person to keep the rod moving with constant velocity v is: 0 BLV BLv/R B2L2v/R B2L2v2/R

A rod of length L and electrical resistance R moves through a constant uniform magnetic field B; both the magnetic field and the direction of motion are parallel to the rod. The force that must be applied by a person to keep the rod moving with constant velocity v is: 0 BLV BLv/R B2L2v/R B2L2v2/R

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A rod of length L and electrical resistance R moves through a constant uniform magnetic field B; both the magnetic field and the direction of motion are parallel to the rod. The force that must be applied by a person to keep the rod moving with constant velocity v is: 0 BLV BLv/R B2L2v/R B2L2v2/R

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