# Equivalent resistance of tricky circuits?

#### asifrulzz

equivalent resistance of tricky circuits???

1. Homework Statement
what is the equivalent resistance between A and B?

2. Homework Equations
kirchoffs law for voltage and current

3. The Attempt at a Solution
i got the equivalent resistance between A to C as 3R/4
but i have to find the resistance between A to B but point B is in the middle of the circuit and i dont know how to approach it
i am stuck on this

Last edited:
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#### SammyS

Staff Emeritus
Homework Helper
Gold Member
Re: equivalent resistance of tricky circuits???

1. Homework Statement
what is the equivalent resistance between A and B?View attachment 43813

2. Homework Equations
Kirchhoff's Law for voltage and current

3. The Attempt at a Solution
i got the equivalent resistance between A to C as 3R/4
but i have to find the resistance between A to B but point B is in the middle of the circuit and i don't know how to approach it
i am stuck on this
Hello asifrulzz. Welcome to PF !

No attachment found !

#### asifrulzz

Re: equivalent resistance of tricky circuits???

i have attached the circuit diagram

#### gneill

Mentor
Re: equivalent resistance of tricky circuits???

What approach have you tried? Can you show your work so far?

#### asifrulzz

Re: equivalent resistance of tricky circuits???

i have always calculated equivalent resistance at the ends
i dont have any idea how i would reach at point B which is in the middle

#### asifrulzz

Re: equivalent resistance of tricky circuits???

anybody

#### ehild

Homework Helper
Re: equivalent resistance of tricky circuits???

The network of resistors is equivalent with a cube of resistors. You can use that the equivalent points are at equal potential if you connect a voltage source between points A and B, and can be connected with a wire.

ehild

#### Attachments

• 17.4 KB Views: 1,318
Last edited:

#### ehild

Homework Helper
Re: equivalent resistance of tricky circuits???

A step ahead: The points D,E,G of the cube are equivalent and can be connected with a wire. The same holds for J, H, C.

ehild

#### Attachments

• 11 KB Views: 1,049

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