Total resistance in a parallel resistor circuit, of R1 and R2 is
- RT = 1/R1 + 1/R2.
- 1/RT = (R1 * R2) / (R1 + R2).
- 1/RT = 1/R1 + 1/R2.
Explanation from PART66Online
For resistors in parallel the reciprocals of the individual resistances add to give the reciprocal of the total, so 1/RT = 1/R1 + 1/R2. The version RT = 1/R1 + 1/R2 is dimensionally wrong, and the product-over-sum form must equal RT itself, not 1/RT.
P
pB1B2 asked · 21 Jan 2017
i think the answer here is wrong! the true answer is RT = (R1 x R2) ÷ (R1 + R2)
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