Calculating the energy transferred?

  1. A conductor is placed in a magnetic field.
    When a power source connected to the conductor creates a voltage difference in a conductor, current starts to flow.

    Now the conductor gains KE due to the Lorentz force being applied, I want to calculate the energy transferred from the power source to do this work, is E = P x t a good formula?
    Should I consider the change in time for power to stabilize although its a extremely fast process?
  2. jcsd
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