If given three resistance 2 Ω, ,2 Ω, 4 Ω, are to be arranged in electric circuit, so that net resistance is smaller than 1. Which arrangement is it?
As we know in Series combination net resultant is equal to the sum of all individual resistance
So, on adding we get R(net)=7 Ω, ,which is greater than 1
Hence, it must be a parallel combination.