Physics 2

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Suppose, in the figure below, a 0.90-m rod experiences a 1.2-T magnetic field and the hand keeps it moving to the right at a constant speed of 3.5 m/s. If the current in the circuit is 0.040 A, what is the average power being delivered to the circuit by the hand?

  • Physics 2 -

    There is no "figure below".

    Average power is the force on the bar multiplied by the velocity.

    The force on the bar is B*I*L
    L = 0.90 m
    B = 1.2 Tesla
    I = 0.040 A

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