A Physics student has three resistors

PHYSICS · Single correct · CBSE · Physics · Electricity · Electricity

Problem

A Physics student has three 3-Ω3\text{-}\Omega resistors. Which of the following resistances cannot be made using all three of the 3-Ω3\text{-}\Omega resistors? (1) 1Ω1 \Omega (2) 2Ω2 \Omega (3) 4 Ω4\ \Omega (4) 4.5 Ω4.5\ \Omega

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