Question

Find equivalent resistance between A and B

Answer 1

1/Rp = 1/20 +1/20
= 2/20
[Rp1 = 10 ohm] = Rp3

Rs = 15+15 = 30 ohm
this is parallel to 30 ohm and series of 2 × 15 ohm

1/Rp = 1/30 +1/30 +1/30
= 3/30
1/Rp = 1/10
[Rp2 = 10 ohm]

Rs = 10 + 10 + 10 ( Rp1 +Rp2 + Rp3)
= 30 ohm

So 30 ohm is the answer.

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Answer 2

Answer:1/Rp = 1/20 +1/20

= 2/20

[Rp1 = 10 ohm] = Rp3

Rs = 15+15 = 30 ohm

this is parallel to 30 ohm and series of 2 × 15 ohm

1/Rp = 1/30 +1/30 +1/30

= 3/30

1/Rp = 1/10

[Rp2 = 10 ohm]

Rs = 10 + 10 + 10 ( Rp1 +Rp2 + Rp3)

= 30 ohm

Explanation:Thanks.