All About Circuits Forum finding missing resistor value
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#1
10-01-2005, 08:41 PM
 coatman New Member Join Date: Oct 2005 Posts: 1

hello all i have just started a dc curcuits class and having trouble with finding a missing resistor value if someone could give me a formula i would be forever grateful thank you for your time sorry i should have added that this is for a parallel circuit
#2
10-01-2005, 10:01 PM
 pebe Senior Member Join Date: Oct 2004 Location: Scotland Posts: 620

Quote:
 Originally posted by coatman@Oct 1 2005, 09:41 PM hello all i have just started a dc curcuits class and having trouble with finding a missing resistor value if someone could give me a formula i would be forever grateful thank you for your time sorry i should have added that this is for a parallel circuit Quoted post
Try the tutorials on this site

#3
10-03-2005, 11:21 AM
 Dave Senior Member Join Date: Nov 2003 Posts: 6,961 Blog Entries: 17

More specifically refer to Volume 1 Chapter 5: Series and Parallel Circuits.

For a parallel resistor network:

1/Rtot = 1/R1 + 1/R2 + 1/R3 + ........ 1/Rn

Where n is the number of resistors in the parallel network.

 Tags finding, missing, resistor

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