Question

2. Why is resistance maximum in series combination and minimum in parallel combination?​

Answer 1

When a number of resistors are connected in series the equivalent resistance will be the sum of individual resistances like,

Re=R1+R2+R3....+Rn

When resistors are connected in parallel the sum of all the resistances will be less than the individual resistance

1/Re=1/R1+1/R2+1/R3....+1/Rn