The drawing shows two perpendicular, long, straight wires, both of which lie in the plane of the paper. The current in each of the wires is / = 3.8 A. In the drawing du = 0.10 m and dy = 0.35 m. Find the magnitudes of the net magnetic fields at points A and B. Bnet at point A = Bnet at point B = i i dy A $ dv B dy 00

In the figure, point P, is at perpendicular distance R = 28.7 cm from one end of straight wire of length L = 14.6 cm carrying current i = 0.756 A. (Note that the wire is not long.) What is the magnitude of the magnetic field at P2? P R R L. Number i Units

В X X X X X X X . An electron traveling v = 2.50 ×10° m/s horizontally to the east in a plane perpendicular to a uniform B = 0.75 T magnetic field. a) Find direction of the force on this electron. Please explain X X X X X X X ►X X X X X X X V X X X X X X X your result in details. X X X X X X X b) Find the magnitude of the force on this electron. X X X X X X X

The figure below shows two wires carrying currents of I = 5.30 A in opposite directions, separated by a distance d. Assume d = 9.6 cm. a).Find the magnitude (in µT) and direction of the net magnetic field at a point halfway between the wires. b).Find the magnitude (in µT) and direction of the net magnetic field at point P1, 9.6 cm to the right of the wire on the right. c).Find the magnitude (in µT) and direction of the net magnetic field at point P2, 2d = 19.2 cm to the left of the wire on the left.   d). What If? Repeat part (a) for the case where both wires carry currents in the same direction, upward in the figure. Find the magnitude (in µT) and direction of the net magnetic field at a point halfway between the wires.