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    EMF in a current-carrying system.

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    A bar is moving across a open-ended loop with resistance R in a presence of a constant perpendicular magnetic field.

    a. At what speed should the bar be moved to produce a current of 0.500 A?
    b. What is the motional emf?
    c. What is the power dissipated by the resistor?
    d. What force must be applied to the bar?

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    • The change in the area of the circuit causes a change in the magnetic flux .
    • The change in the flux creates an induced E.M.F in the circuit.
    • The induced E.M.F generates a current.
    • The direction of the current is such ...

    Solution Summary

    The solution demonstrates step by step how to get from changes in the flux to power dissipation in the circuit. The EMF in a current-carrying system are given.