Magnitude and direction of a perpendicular magnetic field
An aluminum rod of .20 kg is lying on top of two conducting rails which are separated by 1.6m. What should the magnitude and direction of a perpendicular magnetic field be so that the rod accelerates through .41m/s2 to the left?
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Find out the net electric potential energy of a non-conducting sphere of radius ro carrying a net charge Q distributed uniformly throughout its volume. Regard ro and Q as given quantities.
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