# Can't calculate the resistance

Discussion in 'Homework Help' started by Adlh, Mar 1, 2015.

Mar 1, 2015
3
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So I have this circuit that I have to calculate the resistance in and I have no idea how to add them up. I'm confused by the short circuit and how it has affected the wiring

2. ### MrChips Moderator

Oct 2, 2009
14,247
4,174
How does one measure resistance?

Apply a voltage source across A-B and measure the current through that leg.
It doesn't matter what voltage you apply but try 50V for starters.

Solve by applying KVL and KCL.

3. ### crutschow Expert

Mar 14, 2008
16,182
4,322
Do you know how to calculate the equivalent value of resistors in series and resistors in parallel?

4. ### MikeML AAC Fanatic!

Oct 2, 2009
5,451
1,070
Are these two circuits equivalent?

Mar 1, 2015
3
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First Yes I know how to add series and parallel resistors, its just that the short circuit completely confused me on how the current would flow. Without the short circuit it would have been an extremely easy question.
Yes I think the 2 circuits above are equivalent to each other with how the current flows in both of them.

6. ### MikeML AAC Fanatic!

Oct 2, 2009
5,451
1,070
So now you have everything you need to solve the problem?