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anonymous

  • 5 years ago

For the circuit below, each branch has equal resistance. What value of resistance (R) will produce an equivalent resistance of 33.3 Ω?

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  1. anonymous
    • 5 years ago
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    \[V, R!,R2, are the resistors on the circuit and they are blank\]

  2. anonymous
    • 5 years ago
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    V,R1,R2 are the resistors on the circuit and the are blank

  3. radar
    • 5 years ago
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    Besides telling you they are equal, do they have a value assigned to any of them? Or is the voltage and current given? You are missing information needed to solve this problem.

  4. anonymous
    • 5 years ago
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    are the resistors in series or parallel

  5. anonymous
    • 5 years ago
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    sorry they are parallel and they have no value I couldn't upload a picture but are two circuits R1, R2 and Voltage and there is no current given

  6. anonymous
    • 5 years ago
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    each resistor is 100 ohms

  7. anonymous
    • 5 years ago
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    (1 )/( R_T )=1/R_1 +1/R_2 +1/R_3

  8. anonymous
    • 5 years ago
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    .is it three resistor or two. i did for three.

  9. anonymous
    • 5 years ago
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    its only two

  10. anonymous
    • 5 years ago
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    i am not getting to see the circuit if it two then each is around 67 ohms.

  11. anonymous
    • 5 years ago
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    is there a way i can upload it here

  12. anonymous
    • 5 years ago
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    do you understand the formular i put there. it is a given if two resistor in parallel with the same value you divide by two if it 3 with the same value divide by 3.

  13. anonymous
    • 5 years ago
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    what subject is that?

  14. anonymous
    • 5 years ago
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    yes i understand the forumla but my biggest issue was finding the value of the two resistors because all was given was the equivalnent resistance of 33.3 ohms this is for my ECET class at devry.

  15. anonymous
    • 5 years ago
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    but its physics it just sucks because my professor is really not that good at responding back and the book that we have is really not great for sshowing you how to do things

  16. anonymous
    • 5 years ago
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    ok.

  17. radar
    • 5 years ago
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    We are making some assumptions. For example if the two resistors were 400 ohms the added resistor to make an equivalent amount of resistance of 33.3 would be a 40 Ohms. Check it out

  18. anonymous
    • 5 years ago
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    yes rada that it we want to add a 3rd resistor but we only given two in parallel and the total. we were not ask what value should we add to get 33.3ohms.

  19. anonymous
    • 5 years ago
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    i tried to jput it as my profile picture lol but its to small

  20. radar
    • 5 years ago
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    The assumption was that the two were 100 Ohm and a 3rd 100 ohm would indeed be a 100 ohm, but there are many other possibilities.

  21. radar
    • 5 years ago
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    I thought we were given a circuit with two branches with resistors and requested what would be the value of a resistor to connect to a third branch to make the equivalent resistance 33.3 Ohms.

  22. anonymous
    • 5 years ago
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    _________________ | | | V| R1{ R2 { | | | | | | | | | |______ |_________ |

  23. radar
    • 5 years ago
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    I guess if the third resistor had to equal the other two, then 100 can be the only answer

  24. anonymous
    • 5 years ago
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    ok its not perfect but thats how it looks

  25. radar
    • 5 years ago
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    Does it say that the three resistors have to be equal?

  26. anonymous
    • 5 years ago
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    no it says that the two resistors have to be equal

  27. anonymous
    • 5 years ago
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    I have one that says that is the same as this one that has three branchs that have to be equal but for this problem it only request two branches to be equal

  28. anonymous
    • 5 years ago
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    this is where i kept getting confused because the book doesn't explain this and I couldn't figure out what to do.

  29. radar
    • 5 years ago
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    Well 100 for each will work, so will 400 for the two and 40 for the third.

  30. anonymous
    • 5 years ago
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    if you have any more question email me at lavicrep5@hotmail.com

  31. anonymous
    • 5 years ago
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    radar read the question again. i think we might confuse the person.

  32. anonymous
    • 5 years ago
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    see thats what i thought last night about 100 for both but then when you add them up and then divide them they don't come out to 33.3 if i divide 3 from 100 I come up with 33.3

  33. radar
    • 5 years ago
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    I've read it agaIn and I find it confusing? Is the final circuit to be 2 or 3 resistors?

  34. radar
    • 5 years ago
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    The resistors are connected in the parallel configuration (branches rather then series.

  35. radar
    • 5 years ago
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    The total resistance of parallel connected resistors will be less than the smallest resistor.

  36. anonymous
    • 5 years ago
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    just 2

  37. radar
    • 5 years ago
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    Also the total resistance is the recripocal of the sum of the reciprocal values.

  38. anonymous
    • 5 years ago
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    yes so i thought that if i divided 33.3 that would give me my answer for the two resistors but i was not sure about that

  39. radar
    • 5 years ago
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    O.K then they would be 66 2/3 ohms each. Like resistors when connected parallel, the total can be computed by dividing the resistor value by the number of resistors.

  40. anonymous
    • 5 years ago
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    ok. i think that the final result

  41. radar
    • 5 years ago
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    prcival, did you find the wording of the problems sort of confusing?

  42. anonymous
    • 5 years ago
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    yep it is confusing. you get to know your circuit to sort it out. it was left for too many interpretations.

  43. anonymous
    • 5 years ago
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    tell me about i had to reread it a couple of times to make sure i was looking at it right

  44. anonymous
    • 5 years ago
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    thank you for helping me because i was completly lost

  45. anonymous
    • 5 years ago
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    so i would just do the same thing for the three resistors correct

  46. anonymous
    • 5 years ago
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    percival I had sent you a pic of the circuit did you receive it

  47. anonymous
    • 5 years ago
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    yes. do you have more?

  48. anonymous
    • 5 years ago
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    yes i have another one just like the one we did earlier but its with three resistors but its the same problem

  49. anonymous
    • 5 years ago
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    so i made all of them 100 then divde by three is that correct

  50. anonymous
    • 5 years ago
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    ok then in that case you multiply the total by 3. remind you if they are is series you cannot multiply youhave to divide and that only work when the rsistor values are the same.

  51. anonymous
    • 5 years ago
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    yep.

  52. anonymous
    • 5 years ago
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    cool i so understand now you have been a life saver

  53. anonymous
    • 5 years ago
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    you welcome feel free to email me questions.

  54. anonymous
    • 5 years ago
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    i will you guys just don;t know how relieved I am now to finally understand this

  55. anonymous
    • 5 years ago
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    Answer is 66.6 ohms. If you have 2 resistors with the same value,for a sample;R1=50 and R2=50 ,just divide one on half,50/2=25. In your problem 66.6/2=33.3 ohms. Or you can do this way R1xR2/R1+R2=66.6x66.6/66.6+66.6=33.3 Ohms.

  56. anonymous
    • 5 years ago
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    Answer is 66.6 ohms. If you have 2 resistors with the same value,for a sample;R1=50 Ohm and R2=50 Ohm ,just divide one on half,50/2=25 Ohm ,total resistance. In your problem 66.6/2=33.3 ohms.R1=66.6 Ohm,R2=66.6 Ohm Or you can do this way R1xR2/R1+R2=66.6x66.6/66.6+66.6=33.3 Ohms is the total resistance in the circuit.

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