Physics 121 Lecture Summary - CPP

Terminal voltage = emf – Ir (r = internal resistance) Kirchhoff’s Rules (21.5) Junction rule: Sum of the current in = sum of the current out (if adding absolute values only) for example: I1 = I2 + I3 (absolute values) OR all (positive) currents in plus all (negative) currents out = 0. ................
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