Question

For what value of r the net resistance of the circuit will be 18 ohms

Answer 1

Answer:

Parallel =

R 1+R ÷2R 1R 2

⇒10,10 are parallel +10 in server =5+10=15Ω

Now this 15 is m parallel connection with 10

25

15×10 =6

⇒ Now 10 and 6 are in series and parallel with R

(16+R)

16R

+10=Rec=18 (given)

Solving

R=16Ω