Use the following scenario for the next two problems. Two long, straight wires a

Question

Use the following scenario for the next two problems. Two long, straight wires are oriented perpendicular to the page at the two corners of a right isosceles triangle, as shown in the figure. The wires carry the same amount of current, but the current in the left wire is flowing into the page, and the current in the right wire is flowing out of the page. What is the direction of the magnetic field at point P? up down to the right to the left out of the page Do the wires exert forces on each other? If so, what is the direction of the force on the right wire by the left wire? No. Yes, to the right Yes, to the left Yes, up Yes, down

Explanation / Answer

a) Field from iout is 225° from the right horizontal ccw. In teh same way filed from Iin is 135° from teh right horizontal ccw. Their values are equal since current are the same and P is in the axis of of line connceting wires. Thus teh B field vertical components sums up to null vertical component and the resultant field points to the left.

There is a force among wires. B generated by left wire is upward. I is inside teh sheet, so that accordiing, to right's hand rule force is to the right

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