Total Resistance-Rt

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  • This topic has 5 replies, 2 voices, and was last updated 10 years ago by s.
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  • #10220
    admin
    Keymaster

    How i can get Total resistance in a parallel circuit.

    Rt = 1/ R1 + 1/R2

    Rt=?, kindly show how to  calculate,

     

     

           

    #11416
    admin
    Keymaster

    Hello

     

    The correct is   1/Rt = 1/R1 + 1/R2, you can also do Rt=R1*R2/(R1+R2)

    #11417
    admin
    Keymaster

    Im not sure if that is correct, perhaps maybe Rt=R1+R2/R1(R2)

    #11413
    admin
    Keymaster

    1/R=1/r1 + 1/r2

    so; R = r1*r2/(r1 +r2)

    #11412
    admin
    Keymaster

    For Parallel Circuit, the general formula is:

    1/Rt = 1/R1 + 1/R2 + 1/R3 + ….+ 1/Rn   where “n” is the number of resistor connected in parallel. This means that the reciprocal of the total resistance is equal to the sum of the reciprocals of the given resistances. For two resistors, 1/Rt = 1/R1 + 1/R2. Simplifying this equation, Rt = (R1*R2)/(R1 + R2). For three resistors in parallel, 1/Rt = 1/R1 + 1/R2 + 1/R3. Also equal to Rt = R1*R2*R3/(R2*R3 + R1*R3 + R1*R2). And so on…

     

     

     

    #12258
    s
    Participant

    1/Rt=1/R1+1/R2+1/R3+………………….+1/Rn

    Rt = Total resistance

    n = number of parallel circuits

     

    Also the same formula can be used for Z 

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