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AP Physics 1: 3.2 Changes and Conservation Laws 188 Views


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AP Physics 1: 3.2 Changes and Conservation Laws. What is the value of the second resistor?

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Transcript

00:00

Thank you We sneak And here's your shmoop du jour

00:06

brought to you by batteries We take him for granted

00:08

but batteries air pretty essential The modern life After all

00:11

we can't really run a smartphone with a steam engine

00:14

All right simple circuits powered by a battery with a

00:17

terminal voltage of ten volts to resistors in a seriously

00:20

directly off the battery and connect to the ground If

00:23

the first resistor are one equals two homes what's the

00:27

value of the second resistor If the current is too

00:31

amperes well you're the finish line Yeah like the movie

00:39

Okay well this own guy must have been pretty smart

00:42

He has a law named after women A unit of

00:44

measurement too Part of own law states that voltage equals

00:48

amperage times resistance That thing because the resisters in this

00:54

circuit are in siri's the current running through them is

00:57

the same So the total voltage equals the voltage across

01:01

the first resistor Plus the voltage across the second resister

01:04

in equation Looks like this Yeah And we can plug

01:07

our numbers in to find an answer So the total

01:10

voltage is ten volt first resistor has two homes of

01:13

resistance and the current is too And in the second

01:16

resistor the current is still two amps And doing the

01:19

math we find that the second resistor gives three homes

01:23

of resistance The equation of alms law can be manipulated

01:27

to find voltage Current or resistance It just depends on

01:31

what info we have and what we're trying to find

01:33

Of course we're not gonna find much if we don't

01:35

have power Steam engines Just not practical way should go

01:39

green about a hamster wheel on that Be kind of

01:42

cool running her iphone Never mind Pita looked the other 00:01:46.211 --> [endTime] way

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