Why does the current not skip resistors R3 and R5 when R6 and R4 have no resistance?












9












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I do not understand why the current still flows through resistors R3 and R5 when R6 and R4's resistance is 0. To me, it would seem that the current would skip R3 and R5, however the answer key says otherwise. I have attached the problem and answer key. I realize that this is not the question being asked in the problem, however when I solved it I just took out the R3 and R5 so I got a different answer for the current flowing through the voltage source.Problem & Answer Key










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    9












    $begingroup$


    I do not understand why the current still flows through resistors R3 and R5 when R6 and R4's resistance is 0. To me, it would seem that the current would skip R3 and R5, however the answer key says otherwise. I have attached the problem and answer key. I realize that this is not the question being asked in the problem, however when I solved it I just took out the R3 and R5 so I got a different answer for the current flowing through the voltage source.Problem & Answer Key










    share|improve this question







    New contributor




    David Jones is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.







    $endgroup$















      9












      9








      9


      1



      $begingroup$


      I do not understand why the current still flows through resistors R3 and R5 when R6 and R4's resistance is 0. To me, it would seem that the current would skip R3 and R5, however the answer key says otherwise. I have attached the problem and answer key. I realize that this is not the question being asked in the problem, however when I solved it I just took out the R3 and R5 so I got a different answer for the current flowing through the voltage source.Problem & Answer Key










      share|improve this question







      New contributor




      David Jones is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.







      $endgroup$




      I do not understand why the current still flows through resistors R3 and R5 when R6 and R4's resistance is 0. To me, it would seem that the current would skip R3 and R5, however the answer key says otherwise. I have attached the problem and answer key. I realize that this is not the question being asked in the problem, however when I solved it I just took out the R3 and R5 so I got a different answer for the current flowing through the voltage source.Problem & Answer Key







      electrical engineering






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      David Jones is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      share|improve this question







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      David Jones is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      asked 14 hours ago









      David JonesDavid Jones

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          2 Answers
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          active

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          14












          $begingroup$

          With R4 and R6 being zero, this means they are essentially a short circuit. You should imagine the initial circuit to look like this:





          schematic





          simulate this circuit – Schematic created using CircuitLab



          This now becomes much easier to visualise.




          however when I solved it I just took out the R3 and R5 so I got a
          different answer for the current flowing through the voltage source




          I believe what happened here is you mistook the meaning. Where you removed them from the circuit, what you should have done is just replaced them with a wire as shown above. When you do this, you can see that R3 and R5 are connected straight across the supply voltage, so there must be current flowing through them. From here, you can re-draw and simplify the circuit to solve.






          share|improve this answer











          $endgroup$









          • 1




            $begingroup$
            Actually removing the resistors would be appropriate if their resistances were infinity ohms.
            $endgroup$
            – Nate Eldredge
            2 hours ago



















          5












          $begingroup$


          I do not understand why the current still flows through resistors R3
          and R5 when R6 and R4's resistance is 0




          When R6 and R4 are zero, R3 and R5 directly connect across voltage source V. Given that V = 10 volts, sure there'll be current through R3 and R5.






          share|improve this answer









          $endgroup$













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            2 Answers
            2






            active

            oldest

            votes








            2 Answers
            2






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            14












            $begingroup$

            With R4 and R6 being zero, this means they are essentially a short circuit. You should imagine the initial circuit to look like this:





            schematic





            simulate this circuit – Schematic created using CircuitLab



            This now becomes much easier to visualise.




            however when I solved it I just took out the R3 and R5 so I got a
            different answer for the current flowing through the voltage source




            I believe what happened here is you mistook the meaning. Where you removed them from the circuit, what you should have done is just replaced them with a wire as shown above. When you do this, you can see that R3 and R5 are connected straight across the supply voltage, so there must be current flowing through them. From here, you can re-draw and simplify the circuit to solve.






            share|improve this answer











            $endgroup$









            • 1




              $begingroup$
              Actually removing the resistors would be appropriate if their resistances were infinity ohms.
              $endgroup$
              – Nate Eldredge
              2 hours ago
















            14












            $begingroup$

            With R4 and R6 being zero, this means they are essentially a short circuit. You should imagine the initial circuit to look like this:





            schematic





            simulate this circuit – Schematic created using CircuitLab



            This now becomes much easier to visualise.




            however when I solved it I just took out the R3 and R5 so I got a
            different answer for the current flowing through the voltage source




            I believe what happened here is you mistook the meaning. Where you removed them from the circuit, what you should have done is just replaced them with a wire as shown above. When you do this, you can see that R3 and R5 are connected straight across the supply voltage, so there must be current flowing through them. From here, you can re-draw and simplify the circuit to solve.






            share|improve this answer











            $endgroup$









            • 1




              $begingroup$
              Actually removing the resistors would be appropriate if their resistances were infinity ohms.
              $endgroup$
              – Nate Eldredge
              2 hours ago














            14












            14








            14





            $begingroup$

            With R4 and R6 being zero, this means they are essentially a short circuit. You should imagine the initial circuit to look like this:





            schematic





            simulate this circuit – Schematic created using CircuitLab



            This now becomes much easier to visualise.




            however when I solved it I just took out the R3 and R5 so I got a
            different answer for the current flowing through the voltage source




            I believe what happened here is you mistook the meaning. Where you removed them from the circuit, what you should have done is just replaced them with a wire as shown above. When you do this, you can see that R3 and R5 are connected straight across the supply voltage, so there must be current flowing through them. From here, you can re-draw and simplify the circuit to solve.






            share|improve this answer











            $endgroup$



            With R4 and R6 being zero, this means they are essentially a short circuit. You should imagine the initial circuit to look like this:





            schematic





            simulate this circuit – Schematic created using CircuitLab



            This now becomes much easier to visualise.




            however when I solved it I just took out the R3 and R5 so I got a
            different answer for the current flowing through the voltage source




            I believe what happened here is you mistook the meaning. Where you removed them from the circuit, what you should have done is just replaced them with a wire as shown above. When you do this, you can see that R3 and R5 are connected straight across the supply voltage, so there must be current flowing through them. From here, you can re-draw and simplify the circuit to solve.







            share|improve this answer














            share|improve this answer



            share|improve this answer








            edited 14 hours ago

























            answered 14 hours ago









            MCGMCG

            6,17031747




            6,17031747








            • 1




              $begingroup$
              Actually removing the resistors would be appropriate if their resistances were infinity ohms.
              $endgroup$
              – Nate Eldredge
              2 hours ago














            • 1




              $begingroup$
              Actually removing the resistors would be appropriate if their resistances were infinity ohms.
              $endgroup$
              – Nate Eldredge
              2 hours ago








            1




            1




            $begingroup$
            Actually removing the resistors would be appropriate if their resistances were infinity ohms.
            $endgroup$
            – Nate Eldredge
            2 hours ago




            $begingroup$
            Actually removing the resistors would be appropriate if their resistances were infinity ohms.
            $endgroup$
            – Nate Eldredge
            2 hours ago













            5












            $begingroup$


            I do not understand why the current still flows through resistors R3
            and R5 when R6 and R4's resistance is 0




            When R6 and R4 are zero, R3 and R5 directly connect across voltage source V. Given that V = 10 volts, sure there'll be current through R3 and R5.






            share|improve this answer









            $endgroup$


















              5












              $begingroup$


              I do not understand why the current still flows through resistors R3
              and R5 when R6 and R4's resistance is 0




              When R6 and R4 are zero, R3 and R5 directly connect across voltage source V. Given that V = 10 volts, sure there'll be current through R3 and R5.






              share|improve this answer









              $endgroup$
















                5












                5








                5





                $begingroup$


                I do not understand why the current still flows through resistors R3
                and R5 when R6 and R4's resistance is 0




                When R6 and R4 are zero, R3 and R5 directly connect across voltage source V. Given that V = 10 volts, sure there'll be current through R3 and R5.






                share|improve this answer









                $endgroup$




                I do not understand why the current still flows through resistors R3
                and R5 when R6 and R4's resistance is 0




                When R6 and R4 are zero, R3 and R5 directly connect across voltage source V. Given that V = 10 volts, sure there'll be current through R3 and R5.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 14 hours ago









                Andy akaAndy aka

                241k11181414




                241k11181414






















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