5. What is (a) the highest, (b) the lowest total resistance that can be secured by combinations of four coils of resistance 4Ω,8Ω,12Ω,24Ω ?
(a) the highest total resistance that can be secured by combinations of four coils of resistance 4Ω,8Ω,12Ω,24Ω ?
(b) the lowest total resistance that can be secured by combinations of four coils of resistance 4Ω,8Ω,12Ω,24Ω ?