switch A long, straight, vertical segment of wire traverses a magnetic field of
ID: 1786536 • Letter: S
Question
switch A long, straight, vertical segment of wire traverses a magnetic field of magnitude 6.0 T in the direction shown in the diagram. The length of the wire that lies in the magnetic field is 0.180 m. When the switch is closed, a current of 12.0 A flows through the wire from point P to point Q. Which one of the following statements concerning the effect of the magnetic force on the wire is true? The wire will be pushed upward, out of the plane of the paper. O The wire will have no net force acting on it The wire will be pushed to the right The wire will be pushed downward, into the plane of the paper O The wire will be pushed to the left. Submit Answer Tries 0/100 What is the magnitude of the magnetic force acting on the wire? O 13 N 72 N O 1.1 N 2.2 N Submit Answer Tries 0/100Explanation / Answer
The correct Ans is:
The wire will be pushed downward, into the plane of the paper.
Since force is always perpendicular to the current and B field.
Correct Ans is:
F = 13 N
Because:
We know that
F = B I L
F = 6 x 12 x 0.18 = 12.96 N = 13 N
Hence, F = 13 N
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