Using Kirchhoff’s rules, calculate the current through the 40 Ω and 20 Ω resistors in the following circuit:
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Physics Concept
Kirchhoff's current law (1st Law) states that current flowing into a node (or a junction) must be equal to current flowing out of it. This is a consequence of charge conservation. Kirchhoff's voltage law (2nd Law) states that the sum of all voltages around any closed loop in a circuit must equal zero.
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