Teaching Physics with the Physics Suite

Edward F. Redish

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Ampere's law in a capacitor

Ampere's Law states that

where S stands for a loop and S stands for any open surface whose edge (boundary) is the loop S. A current flowing in a long wire charging a capacitor (as shown in the figure below) causes some difficulty for this law. Explain what the difficulty is and how it can be fixed.

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Page last modified November 5, 2002: MG10