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Thank you and here's your shmoop du jour brought to

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you by electricity because without electricity this whole shmoop thing

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just really wouldn't work Yeah smoke signal shmoop just doesn't

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sound practical All right a group of students is tasked

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with creating an experiment to illustrate the conservation of electric

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charge As shown through kirchoff junction rule They're given a

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simple circuit board A twenty four volt battery three resistors

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and an amp meter Which of the following circuits should

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the students use and hear potential answers All right Circular

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d'oh cancer This we first have to be clear on

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what kirchoff junction rule actually his since that's the whole

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point of the question and all Well cochise junction rule

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states that current is conserved through a junction so that

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the amount of current that comes into a junction is

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the same amount that comes out of it That's part

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of the law of conservation of electrical charge in a

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closed system electrical charge can't change so we can put

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all the junctions we want in a circuit A total

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charge coming out of all those junctions will still be

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the same as what came in And if we measure

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the current at any point within those junctions it'll add

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up to what went in Got it We'll prove the

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kirchoff wasn't just goofing around We need a circuit that

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allows us to measure the current either coming into or

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going out of a junction and we also need to

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measure the current at all the points that are part

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of the junction The diagram that allows us to do

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that is answered with this circuit We can use the

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meter to measure the current at the first resistor then

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use it to measure the current at each branch of

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the junction Then we could prove that the total current

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is the same in the junction and outside of it

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and old gustav kirchoff would be proven right once again

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and hopefully our electric grid will keep working for a

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long time But if the power goes down and smoke

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signals don't work well we might just have to get 00:01:55.169 --> [endTime] our shmoop on via carrier pigeon

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