For the following, refer to the following diagram: Consider the current going in

Question

For the following, refer to the following diagram: Consider the current going in the direction shown to represent the movement (as usual) of positive charge. Based on this and the earlier material, what should happen to the current carrying wire if it were free to move? Explain this carefully. Remember that current is defined as the movement of positive charge and assume (reasonable) that the moving charges will drag the physical wire along with it (since it can?t leave it behind!). What would happen if the direction of the current were reversed?

Explanation / Answer

as the direction of magnetic field is from North pole to south pole,

the field is towards right in this figure

and current is flowing in the upwards direction ,

Now , as Force on a current carrying wire is F = iL X B

here , the direction of force is INTO the page.

b)

If the direction of current is reversed , then ,

the direction of force also reverse,

Now, the force acting on the wire is acting OUT of the page

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