By A Mystery Man Writer
File:ParallelCircuit.svg - Wikimedia Commons
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File:Kirchhoff-example-circuit-loops.svg - Wikimedia Commons
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6.3 Kirchhoff's Rules – Introduction to Electricity, Magnetism, and Circuits
File:Simple feedback control loop.svg - Wikipedia
File:Current controlled current source.svg - Wikipedia
File:Forces-on-current-loop.svg - Wikimedia Commons
File:General Source-Load Circuit.svg - Wikimedia Commons
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File:Example circuit with labels.svg - Wikipedia