Question

solve it explanation plz​

Answer 1

Answer:

8Ω

Explanation:

$R_{DC} = \frac{1}{15} + \frac{1}{30}$

$R_{DC} = 10 \Omega$

Also,

$R_{ABCD} = 15 + 15 + 10 = 40 \Omega$

Now,

$R_{AOB} = 15 + 15 = 30 \Omega$

Thus,

$\frac{1}{R_{AB}} = \frac{1}{15} + \frac{1}{40} + \frac{1}{30} = 8 \Omega$

Hope it helps!

Answer 2

Answer:

Option d is the correct answer. For detailed solution check out the attachment.