A perfectly conducting straight rigid rod of mass m and length L is suspended symmetrically...
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Physics
A perfectly conducting straight rigid rod of mass m and length L is suspended symmetrically from two identical perfectly conducting springs as shown in the figure The springs stretch a distance of xo due to the weight of the wire The circuit has a total resistance of R When the magnetic field perpendicular to the plane of the paper is switched on springs are observed to extend further by the same distance The magnetic field strength is A B C mgR EL paper mgR 2EX0 paper mgR EL map ww R K directed outward from the plane of the directed outward from the plane of the directed into the plane of the paper
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