Basic DC Theory DC CIRCUIT TERMINOLOGYA closed circuit (Figure 13) is an uninterrupted, or unbroken, path for current from the sourceFigure 13 Closed Circuit(EMF), through the load, and back to the source.An open circuit, or incomplete circuit, (Figure 14) exists if a break in the circuit occurs; thisprevents a complete path for current flow.Figure 14 Open CircuitRev. 0 Page 19 ES-02
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