Question

solve the question with full explanation find the total resistance?

Answer 1

Both 30 ohms resistance connect in parallel combination . So
1/R = 1/30 + 1/30
= 15 ohms

Then, all three resistance connection of 15 connect in series So ,
R = r 1 + r2 + r3
R = 15 +15+ 15
R = 45 ohms
so total resistance = 45 ohms