# How do you calculate the total resistance?

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1. Nov 21, 2015

### Zoro

1. The problem statement, all variables and given/known data
What is the Total resistance in Question 38.

2. Relevant equations

3. The attempt at a solution
I tried drawing the circuit again splitting up the series and parallel but i got the wrong answer. The answer is 92. Like i know that the 60 is parallen to 15 and the 15 is parallel to 10. The 15 and 5 are in series and the 20 and 10 are in series and maybe also 5.

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Last edited: Nov 22, 2015
2. Nov 21, 2015

### axmls

"3. The attempt at a solution"

3. Nov 22, 2015

### ehild

You took all the 60 Ω, 15Ω, 20Ω, 10Ω, 5 Ω resistors parallel; they are not.

4. Nov 22, 2015

### Zoro

So what now

5. Nov 22, 2015

### ehild

The ammeter can be replaced by a single wire. How are the 10Ω and 20Ω resistors connected?

6. Nov 22, 2015

### Zoro

Well, it doesnt say. It's just in series judging by the diagram

7. Nov 22, 2015

### ehild

You need to use the diagram.
Yes, they are in series. What is their resultant? How that resultant is connected to the 15 Ω resistor?

8. Nov 22, 2015

### Zoro

Resultant? like 10 + 20 = 30 ?

9. Nov 22, 2015

### ehild

Yes. Now you replace the 10Ω and 20Ω resistors with their series equivalent. How is that 30Ω resistor connected to the 15Ω resistor?

10. Nov 22, 2015

### Zoro

I did this earlier. Is it correct

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11. Nov 22, 2015

### ehild

The diagram is correct. What is the result?

12. Nov 22, 2015

### Zoro

80 + 1/ (1/60 + (1/20) + (1/30) = 90 =/= 92

13. Nov 22, 2015

### ehild

Yor calculation is wrong. How are the 30Ω and 15 Ω resistors connected?

Last edited: Nov 22, 2015
14. Nov 22, 2015

### Zoro

wat

15. Nov 22, 2015

### ehild

????????????????????
I quit. Good luck.

16. Nov 22, 2015

### Zoro

LOl. wtaf man. can you just stop beating around the bush and hit the turkey on the head already?

Last edited: Nov 22, 2015
17. Nov 22, 2015

### CWatters

Forum rules don't allow us to just give you the answer. For why see..

http://tinyurl.com/os67nwp

Next step (as ehild said) is to figure out how the 30Ω and 15 Ω resistors are connected? Series? Parallel? Replace these two with their equivalent.