states that the “total current or charge entering a junction or node is exactly equal to the charge leaving the node as it has no other place to go except to leave, as no charge is lost within the node“.
- The 1 st law or the junction rule: for a given junction or node in a circuit, the sum of the currents entering equals the sum of the currents leaving. This law is a statement of charge conservation.The junction rule tells us I1 = I2 + I3 .
Kirchhoffs Second Law – The Voltage Law, (KVL)
states that “in any closed loop network, the total voltage around the loop is equal to the sum of all the voltage drops within the same loop” which is also equal to zero.
- The 2 nd law or the loop rule: around any closed loop in a circuit, the sum of the potential differences across all elements is zero. This law is a statement of energy conservation, in that any charge that starts and ends up at the same point with the same velocity must have gained as much energy as it lost. where the boxes denote a circuit element, the loop rule tells us 0 = (Vb - Va) + (Vc - Vb) + (Vd - Vc) + (Vd - Va) .
Christine I am confused about the term "node" what does it mean.. thank u..
ReplyDeleteHi Mae. When we say "node" it is the connection or junction of two or more wires or components that transmits or contains current.
DeleteHi Mam Christine. I just wonder, at what situations in real life can we probably make use of the Kirchhoff's Law?
ReplyDeleteKirchhoff law, can be used all over the place in the electric engineering, each circuit utilizes this particular law to work. Aside from that, it is used to simulate complex circuits such as Integrated circuits. In other words, all circuits however big or small, linear or non linear, you can use Kirchoffs law along with some techniques to determine the currents and voltages in a given circuit. So if you want to determine a specific current or voltage all you need to do is apply the Kirchoff's law.
Deletethis blog is really informative. Great Job Mam!
Deletethank you! the blog accommodated it purposed :)
Delete“total current or charge entering a junction or node is exactly equal to the charge leaving the node as it has no other place to go except to leave, as no charge is lost within the node“.
ReplyDeleteIf this is true Ma'am why do we have energy loss in our energy providers?
Hi Adrian! the law you specified above is the Kirchoffs Current law which focused in current while when we say energy loss it's regarding on energy which is different from current. So, you cannot correlate the two. But energy loss occurs when energy is transformed from one form to another and for more details you can visit the blog of Ma'am Mylene at www.mylenegeronimo.blogspot.com.
DeleteWhy this topic is not being tackle in our class? I think it's the best topic we need to understand to be able to make a good circuit board design.
ReplyDeleteIt will be discuss soon eventhough you're right that it must be the first one before PCB designing but we're not the one who provides the arrangement of topics. Aside from that, it's the purpose of this blog, to provide an overview and additional informations.
DeleteHI MA'AM CHRISTINE :) WHAT IS THE ADVANTAGE OF USING KIRCHOFFS CIRCUIT LAW RATHER THAN OHMS LAW?
ReplyDeleteHi Micah! The advantage of Kirchhoff's law, it is applicable for simple and advanced circuitry (one of the example is toy car remote control circuit) as well as complex circuits such as double source, bridge and so on while ohm's law are applicable for simple circuits only.
Deleteano po ang pinagka iba ng kirchoffs law sa ohms law ?
ReplyDeleteHi Elmer! Kirchhoff's law apply for simple and complex circuits while ohm's law practice only for simple circuits.
DeleteHi Mam, can you give us a little history about Kirchhoff law?
ReplyDeleteHi Luis! This is a little insight about Kirchhoff law, Gustav Robert Kirchoff was a German physicist born on March 12, 1824, in Konigsber, Prussia. Gustav Kirchoff's first research topic was on the conduction of electricity. As a result of this research, Kirchoff wrote the Laws of Closed Electric Circuits in 1845. These laws were eventually named after their author, which are now known as Kirchoff's Current and Voltage Laws.
DeleteThank you Mam! It helps a lot.
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