Physics 1 Problem Solutions 240

Physics 1 Problem Solutions 240 - 236 Chapt 31 Faraday’s...

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Unformatted text preview: 236 Chapt. 31 Faraday’s Law of Induction and Inductors the path is unmoving in the inertial frame of observation, then vectorv = 0, and there is no motional emf. a) close b) antiparallel c) parallel d) perpendicular e) infinitesimally close 031 qmult 00312 2 5 1 moderate thinking: induced emf and magnetic force 19. Consider a wire loop held rigidly in place. The wire loop is idealized as infinitely narrow and completely confines the free charges inside of it so that they can only move along the wire. A changing magnetic field creates an induced emf in the wire. The charges have some motion caused by the induced emf. The magnetic field also causes a magnetic force on the moving charges. But in this case the charge motion CANNOT be affected by the magnetic force. This is because magnetic force is: a) always PERPENDICULAR to the direction of motion of a charge and is always canceled by the confining force of the WIRE ....
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