Electronics: Resistors in parallel

From relation for calculating the resistance of parallel combination of resistors:

frac{1}{R} = frac{1}{R<sub>1</sub>} + frac{1}{R<sub>2</sub>} $ $

Calculate the R, if R1 = 2Ω a R2 = 15Ω

Result

R =  1.76 Ω

Solution:

Solution in text R =

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