Question

show how would you join three resistors each of resistance 9 ohm so that the equivalent resistance of the combination is 13.5 ohm 6 Ohm

Answer 1

two in parallel and 1 in series for 13.5

Connect 2 resistors in series and one in parallel for 6
when u connect it in series R1+R2 = 18

connect this one parallel to the third one
so 1/Rp= 1/18 + 1/9 = 1+2/18 
=3/18
Rp=18/3=6


pls mark it as the brainliest

Answer 2

(1) I KNOW ABOUT THE FIRST ONE ONLY 
     IF YOU WANT TO GET A EQUIVALENT COMBINATION OF 13.5 OHM 

    THEN YOU SHOULD CONNECT 1 RESISTOR IN SERIES AND OTHER TWO RESISTORS IN PARALLEL 

       1/Rp=1/R1+1/R2
        1/Rp= 1/9+1/9
        1/Rp=2/9
         Rp=4.5ohm
   when we add Rs and Rp we get=9+4.5=13.5 ohm