Purpose:Find an unknown EMF using a voltage divider.
Description:A battery of voltage V is connected across a resistive wire of length L. A second, "unknown" lesser voltage battery is connected through a meter to the slide tap of the potentiometer. Find the distance L1 along the wire where the clip lead draws no current. The unknown voltage Vu is then:
External batteries can be used to provide a different battery configuration if desired.
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Last modified on Thursday, 19 January 2017 14:57