(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A circuit containing three switches, labeled S1, S2, and S3.

Find the current at a for all possible combinations of switch settings.

Put = 170 V, R1 = 30.0 , and R2 = 10.0 .

Assume that the battery has no resistance.

(S1, S2, and S3 all open)

(S1 closed, S2 and S3 open)

(S2 closed, S1 and S3 open)

(S3 closed, S1 and S2 open)

(S1 open, S2 and S3 closed)

(S2 open, S1 and S3 closed)

(S3 open, S1 and S2 closed)

(S1, S2, and S3 all closed)

Figure Shown here: http://www.webassign.net/hrw/28_37.gif" [Broken]

2. Relevant equations

V=iR

3. The attempt at a solution

I'm confused on what it means when a circuit is open or closed, so I don't know how that affects the current.

Also, I don't know how to account for the 2 resistances.

Please help! :)

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Finding Current in a Circuit with 3 Switches

**Physics Forums | Science Articles, Homework Help, Discussion**