Given resistors R1 = 4Ω, R2 = 6Ω, and R3 = 12Ω are connected in parallel, the total resistance (R_total) can be calculated using the formula:
\[
\frac{1}{R_{total}} = \frac{1}{R1} + \frac{1}{R2} + \frac{1}{R3}
\]
Substitute the values:
\[
\frac{1}{R_{total}} =
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