Question

Two long straight parallel wires carry currents of 8.5 A in opposite directions, as shown in the figure. What is the magnetic field due to these wires at a point P that is halfway between the wires? The distance between the wires is 0.80 m. a. 8.5 mu T straight up out of the paper b. 17 mu T straight up out of the paper c. 4.3 mu T up but in the plane of the paper d. 4.3 mu T down but in the plane of the paper e. 85 mu T straight down into the paper An electron is moving at 2.5 times 10^6 m/s perpendicular to a 3.5 mT magnetic field into the page. What is the radius of its path, and does the electron move clockwise (CW) or counterclockwise (CCW)? a. 5.1 cm, CW b. 3.9 cm, CCW c. 1.6 cm, CCW d. 4.1 mm, CW e. 2.0 mm, CCW

Answer 1

(1) Geven , cumenrun both wire = 8, 5 A distance beto en wire , d = o.80 m. Mag ied de to t e a Rde is also comix out of Pape 궈 0.8 m 8.5 ·チ 8 5 Gahen change on 1.6x1019 C Mag m. 4 0625 x10 GXx 3.5 Y103 4-0625 mM