Kirchoff's Law

  • Thread starter soul5
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  • #1
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Homework Statement

How do I prove the relationship between the equivalent resistance of a parallel circuit and the values of the constituent resistors exist?



Homework Equations


V=IR


The Attempt at a Solution



Is it because:

I total= I1+I2+I3

and V is the same in parallel so.

V/R total= V/R1 + V/R2 + V/R3

and divide by V so

1/R= 1/R1 + 1/R2 + 1/R3.

is that why?
 

Answers and Replies

  • #2
Dick
Science Advisor
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That's exactly why. Well done.
 

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