Current due to closing a switch: worked example | DC Circuits | AP Physics 1 | Khan Academy

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Find the current due to closing a switch using equivalent resistance and Ohm's law.

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Incredible how Khan, even after 10 years and with hundreds of employees still makes videos for the channel.

DannyOvox
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This is pretty much my favorite study channel!❤

dds
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Khan Can you please make a video about graphs?

sweetcaribbean
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Я плохо знаю английский, но до меня доходит.
I open используется R1 и R2
I closed используется только R1 потому что ток идет по наименьшему сопротивлению

gimychgm
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What if there is only one resistance? What if there is no R2 only an R1?

TheGramps
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Current always goes through the path with less resistance, so when the switch is close A and B become the same node, it's like you were putting both ends of R2 in the same point or node so no current goes through R2

zeroc
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MAKE A VIDEO OF MATH RIGHT TODAY NOW BOOGIE MS BOOGIE

hamzaalkhulaidi
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When the switch is closed why does it nullify the resistance R2? If the switch is closed the current should pass through R1 in series with R2 instead of bypassing it. Not really good explanation

myspc