small angle in this experimen plane the the the direction of moment th magnet. o

Question

small angle in this experimen plane the the the direction of moment th magnet. of field in simple inertia of The of the magnetic of magnet, Th coils. field will be pa 4:27 PM loncapa.gwu.edu LON-CAPA 22.53 Magnetic Force. Awkward. (Season 4) IEp, 12 IFinals l. Michelle Garci (Student) Phy 212 FA2014 Main Menu Contents rades Course Contents Hws. Timer Notes Evaluate Feedback Print The wire carrying 330 A to the motor of a commuter train feels an attractive force of 4.40x10 3 N/m due to a parallel wire carrying 4.10 A to a headlight. How far apart are the wires? Are the currents in the same direction? yes Tries 0/10 Submit Answer Send Feedbac Post Discussion

Explanation / Answer

Force per unit length = mu_o * I1 * I2 / 2* pi*r

4.4/1000 = 1.25 * 10^ -6 * 330 * 4.1 / 2*3.14 *r

r = 16.34 m

Current is in same direction, since attractive force

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