93. A circuit with current I has two long parallel wire sections that carry current in opposite directions. Find magnetic field at a point P near these wires that is a distance a from one wire and b from the other wire as shown in the figure below. Assume I = 2 A, a=5 cm, b= %3D 3 cm ib

6. Point P is midway between two long, straight, parallel wires that run north-south in a horizontal plane. The distance between the wires is 1.80 cm. Each wire carries a current of 4.00 A toward the north. Find the magnetic field at point P. ____T

An electron is introduced into a uniform magnetic field, Bx = 50.0 μTesla directed at right angles to the electron’s velocity vy = 5 x105 m/s. The electron subsequently moves in a circular path. What is the radius of the circular path? Select one: a. 2.84 cm b. 5.68 cm c. 56.8 cm d. 2.84 m

5. A current through a wire is in the +x direction in the presence of an external magnetic field that points in the +y direction. In what direction does the magneitc force on the wire point?

Two long, straight, parallel wires separated by a distance d carry currents in opposite directions as shown in the figure. The bottom wire carries a current of 6.0 A. The top wire carries a current of 18 A. Point C is at the midpoint between the wires. 6.0 A C 11a. Determine the magnitude of the magnetic field at point C if d = 0.10 m. A) 2.4 x 10-5 T B) 4.8 x 10-5 T C) 9.6 x 10-5 T D) 1.1 x 104 T E) 1.4 x 104 T 11b. What is the direction of the magnetic field at the point C? A) to the left of the page B) to the right of the page C) toward the bottom of the page D) into the plane of the page E) out the plane of the page

6. Figure shows a cross section across a diameter of a long cylindrical conductor of radius a- 2 cm carrying uniform current 170 A. What is the magnitude of the current's magnetic field at radial distance. a) 0, b) 1 cm, c) 2 cm (wire's surface), and d) 4 cm?

An electron is introduced into a uniform magnetic field, Bx = 50.0 μTesla directed at right angles to the electron’s velocity vy = 5 x105 m/s. The electron subsequently moves in a circular path. What is the radius of the circular path? Select one: a. 2.84 cm b. 5.68 cm c. 56.8 cm d. 2.84 m

The net magnetic flux through a closed surface....   a. depends on the net current threading through the surface.   b. depends on the net charge enclosed by the surface.   c. is always zero.   d. is always a positive value.