PHY2061 R. D. Field Department of Physics chp34_3.doc University of Florida Electromagnetic Induction Conducting Loop Moving through a Uniform Magnetic Field: The magnetic forceon the charge qin the loop on side 1is, rrrFqvBB11=×, and for a charge qon side 2to it is, rrrFqvBB22=×. However, because the magnetic field is uniform, rrBB12=, and the induced EMF’s on side 1and side 2are equal, ε1= ε2, and the net EMF around the loop(counterclockwise) is zero, εεε=⋅=−=∫1012qFdlBL oo prr. Conducting Loop Moving through a Non-Uniform Magnetic
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