Home › Electrical Engineering Forum › General Discussion › Total Resistance-Rt
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s.
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- 2010/09/05 at 12:56 pm #10220
admin
KeymasterHow i can get Total resistance in a parallel circuit.
Rt = 1/ R1 + 1/R2
Rt=?, kindly show how to calculate,
2010/09/05 at 3:09 pm #11416admin
KeymasterHello
The correct is 1/Rt = 1/R1 + 1/R2, you can also do Rt=R1*R2/(R1+R2)
2010/09/06 at 7:01 am #11417admin
KeymasterIm not sure if that is correct, perhaps maybe Rt=R1+R2/R1(R2)
2010/09/06 at 10:37 am #11413admin
Keymaster1/R=1/r1 + 1/r2
so; R = r1*r2/(r1 +r2)
2010/09/15 at 4:28 am #11412admin
KeymasterFor 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…
2011/07/02 at 10:04 am #12258s
Participant1/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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