Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Current in Series

  1. Feb 6, 2016 #1
    hey, sir i have a question why the current remain same in series combination of resistance?
     
    Last edited by a moderator: Feb 8, 2016
  2. jcsd
  3. Feb 6, 2016 #2

    QuantumQuest

    User Avatar
    Science Advisor
    Gold Member

    As you apply a voltage to the two resistors in series, electric current path is through the first and then the second resistor and then back to the voltage source. So effectively, according to Ohm's law: I = V/(R1 + R2) and the total current flowing in the circuit, is given by previous relation.So, it is the same for both of resistors.
     
  4. Feb 6, 2016 #3

    anorlunda

    Staff: Mentor

    Your question is not stated correctly. "remain same" compared to what?
     
  5. Feb 6, 2016 #4
    sorry sir
     
  6. Feb 6, 2016 #5
    thanks sir what about voltage in parallel?
     
  7. Feb 6, 2016 #6

    QuantumQuest

    User Avatar
    Science Advisor
    Gold Member

    Now, you can figure out this your own, using a similar logic to the first question: what is changing and what remains constant regarding each resistor?
     
  8. Feb 6, 2016 #7
    in series voltage change but current constant
     
  9. Feb 6, 2016 #8
  10. Feb 6, 2016 #9
    please sir clear my Confusion
     
  11. Feb 6, 2016 #10

    phinds

    User Avatar
    Gold Member

    That's VERY hard to do since your statements and questions are completely unclear. Draw a circuit diagram of a circuit that confuses you and let's talk about it.
     
  12. Feb 7, 2016 #11
    my question is
    why voltage remain constant in parallel circuit?
     
  13. Feb 7, 2016 #12

    cnh1995

    User Avatar
    Homework Helper
    Gold Member

    What is your understanding of voltage?
     
  14. Feb 7, 2016 #13
    work done to bring charge
     
  15. Feb 7, 2016 #14
    or it is the energy that provide source to move charge
     
  16. Feb 7, 2016 #15

    cnh1995

    User Avatar
    Homework Helper
    Gold Member

    Those are vague definitions. How do you measure voltage experimentally?
     
  17. Feb 7, 2016 #16

    cnh1995

    User Avatar
    Homework Helper
    Gold Member

    What I want to emphasize is the nature of current and voltage. Current flows "through" a component and voltage is developed "across" a component. Now can you answer your own question?
     
  18. Feb 7, 2016 #17
    By connecting a voltmeter parallel with circuit
     
  19. Feb 7, 2016 #18
    littlle bit confusion
     
  20. Feb 7, 2016 #19
    mean in parallel component are connected with same point and in series are different
     
  21. Feb 7, 2016 #20
    so in series current is constant and in parallel voltage
     
  22. Feb 7, 2016 #21
    m right sir?
     
  23. Feb 7, 2016 #22
    [QUOTE="Imtiaz Ahmad,
    mean in parallel component are connected with same point and in series are different
     
  24. Feb 7, 2016 #23

    cnh1995

    User Avatar
    Homework Helper
    Gold Member

    Right. Components in parallel are connected between same two points. Hence, voltage is same across parallel components. Refer a good book to cement your concepts and try solving a number of problems on circuits. These concepts will be more clear to you then.
     
  25. Feb 7, 2016 #24
    please tell.
     
  26. Feb 7, 2016 #25
    And Thanks
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted