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Answer to: Simple explanation of voltage pleaseParadoxically enough, water or hydraulics to be specific and electricity react to barriers and loads in much the same way. A garden hose presents resistance to flow even with no kinks. Lay it out in a straight line and with nothing attached water will freely flow out the other end. Or does it? The hose itself much like wire causes a resistance to the flow, however minute it may be. If you rolled the hose up and turn on the water again the coiled hose will create even greater resistance. If this was an electronic circuit that coil of wire could be called a choke because it causes a choking affect in AC circuitry like analog radios or a Crossover in a speaker. Now the hose gets a cut or breaks and you opt to repair it. The coupling that you use will cause additional resistance to the flow. For arguments sake we'll say your coupling was for a smaller hose. That coupling becomes an orifice restricting the flow even greater creating a significant pressure drop across the coupling than it would if you had a larger ...