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OpenStudy (anonymous):
In Kirchoff's rules,how can you determine if the potential difference across each component(eg. voltage and resistor) is positive or negative?
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OpenStudy (radar):
B y determining the direction of current flow. The end of the component that has the electrons entering is negative with respect to end that the electrons are leaving. Electron flow direction is determined by the polarity of the voltage sources.
OpenStudy (anonymous):
Thank you,
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