Why kirchoff second law follow the conservation law of enrgy?
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Kirchhoff’s Voltage Loop Rule (KVL) tells us that when a bit of electrical charge q travels around a closed loop in a circuit, the sum of all voltage rises will be equal to the sum of all voltage drops. Since q times delta V is equal to delta E, this is the same as saying that the sum of energy rises is equal to the sum of the energy drops.
Just like riding a roller coaster. If you return to the same point that you left from, you can be assured that the total of all the up heights that you gain is exactly equal to the total of all the downward heights that you loose. (Conservation of Gravitational Energy.)
Advanced Thinkers should be aware that if there are changing magnetic fields from outside sources linking the loop, then the KVL is no longer true. The induced emf is NOT a conservative field. Conservation of Energy is not violated, but the KVL just is not able to handle the outside ‘disturbance’.
Just like riding a roller coaster. If you return to the same point that you left from, you can be assured that the total of all the up heights that you gain is exactly equal to the total of all the downward heights that you loose. (Conservation of Gravitational Energy.)
Advanced Thinkers should be aware that if there are changing magnetic fields from outside sources linking the loop, then the KVL is no longer true. The induced emf is NOT a conservative field. Conservation of Energy is not violated, but the KVL just is not able to handle the outside ‘disturbance’.
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