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SAT® Subject Test in Physics

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Moderate

Wire through Coil

SATPHY-CQTK4E

Pictured below we see a tightly wrapped coil with a straight wire running through the side, along the diameter of a cross section of the coil. From our point of view, we are looking straight through the coil.

We can see from the diagram that from our perspective, the coil carries a clockwise conventional current, and the straight wire carries a conventional current to the right.

From our perspective, what is the direction of the force on the segment of straight wire in the coil, due to the magnetic field produced by the coil?

A

Away from us.

B

Toward us.

C

Up.

D

Down.

E

Right.