Posted by **Jeni** on Wednesday, October 17, 2007 at 11:40pm.

What is the rule for combining resistors in series and parallel circuits( combination circuits)?

- Science -
**drwls**, Thursday, October 18, 2007 at 12:28am
In series, you add the values of the individual resistors. In a parallel circuit of R1, R2, R3..., the equivalent resistance R is given by

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

Use as meny terms as there are resistors.

## Answer this Question

## Related Questions

- Physics - Thanks for any help :) Four 20 ohm resistors are connected in parallel...
- Physics - I am having some problems trying to figure this out. Series circuits I...
- physics - Design some simple digital circuits based on Boolean expressions. ...
- mathematica - Christmas lights that stay on when one bulb burns out are wired as...
- Math!! - Christmas lights that stay on when one bulb burns out are wired as ...
- circuits - A string of five series resistors is connected across a 20 v battery...
- Physics - How are series and parallel circuits wired?
- Physics - I'm totally confused and this is due Monday- We're dealing with ...
- ET1210-Dc/Ac Circuits - if a certain number of equal resistors are wired in ...
- science - how does an electric ciircuit work? Books have been written about ...