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Solution: A 5 meter length of wire carrying a current of 5 A lies on a...

Question

A 5 meter length of wire carrying a current of 5 A lies on a horizontal table with a rectangular top of dimensions 0.300 m × 0.400 m. The ends of the wire are attached to opposite ends of a diagonal of the rectangle. A vertical magnetic field of 0.30 T is present. What magnetic force acts on this segment of wire? 

A) 1.1 N

B) zero

C) 7.5 N

D) 0.75 N

E) The force cannot be determined without knowing the shape of the length of wire.