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    Physics - Electricity, Magnetism and Waves - Theory

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    How can electric potential and current be determined?

    What does it mean to have a 9 volt battery? How can voltage be measured?

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    (1) Electric Potential

    The electric potential at a point in space is the potential energy per unit charge that is associated with a static (time-

    invariant) electric field. It is determined by the amount of work that has to be done in moving a unit positive charge from ...

    Solution Summary

    The expert determines what it means to have a 9 volt battery. Complete Answers to the Theory Questions are provided.