Question

Why do 2 resistors in parallel together contain less resistance than the same 2 resistors in series?

Answer 1

well i kinda have to explain through words

Answer 2

Re(equivalent resistor) for R1 and R2 in parallel =(R1*R2)/(R1+R2)
Re for series =R1+R2
sorry for the first answer

Answer 3

because we have as a propriety for R1 and R1 two resistors :
in parallel =====> 1/Re = (1/R1)+ (1/R2)
in series ======> Re= R1+R2. /*Re is equivalent of the two*/

Answer 4

mathematically if you take two positive numbers a and b , we always have : a*b/(a+b) <a+b

Answer 5

Thanks :)

Answer 6

with pleasure

Answer 7

For the same reason traffic flows easier on a highway with two lanes instead of one. You have another whole path for the electrons, so they flow easier.