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A constant force of 10N is applied perpendicular to rod placed on 2 parallel rails .If the rod is having a resistance 10ohm but rails have zero resistance then maximum speed of rod is :(rails are long & frictionless & magnetic field is 10tesla).

Solution) F=10N ,R=10Ω ,B=10T,

   TOFIND ---->VELOCITY

    WE KNOW THAT F=qvB

     10=(1.69*10^-19 )*V*10

      V=1/1.6*10^-19

      V=6.25*10^18

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