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# how to apply the potential divider formula watch

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1. How do you apply the potential divider formula? I never know what resistor to assign as R1 or R2. It's just fluke if I get the answer correct..

the equation is: vout=vin x R1(R1+R2)

Thanks people
2. Your equation is incorrect. It should be:

R1 is the resistor which comes after the divider. R2 is the resistor which comes before the divider.

See this diagram:

Replace Z1 with R2 and Z2 with R1

Hope this helps
3. (Original post by crc290)
Your equation is incorrect. It should be:

R1 is the resistor which comes after the divider. R2 is the resistor which comes before the divider.

See this diagram:

Replace Z1 with R2 and Z2 with R1

Hope this helps
you are a life saver! thank you!
4. (Original post by polaritymolecule)
you are a life saver! thank you!
You're welcome

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