Question

what is the highest and lowest resistance that can be secured by combinations of four coil of resistance 4ohm,16ohm,8ohm,20ohm​

Answer 1

Given resistances R1 =4 Ω, R2=8 Ω, R3=12Ω, and R4=24Ω. ∴ 2 Ω is the lowest total resistance.

Answer 2

Explanation:

the highest would be 48ohm using series combination

while the lowest would be 0.4875 ohms using parallel connection