Find the equivalent Resistance between A and B

Explanation

It is wheaat stoone bridge but not balanced. No series parallel connections. But similar values on input side and output. Here we seen that even aftger using symmetry the circuit does not reduce to series parallel combination as in previous examples.

`therefore` Applying Kirchhoff coltafe law v-10(i-x)-5x=0
v-10i+5x=0
10(i-x)-5(2x-i-5x=0
10i-10x-10x+5i-5x=0
15i-25x=0
`x=15/25i" "5x=3i`
Using (2) and (1)
`therefore v-10i+3i=0`
`v/i=7Omega`
`R_("eq")=7Omega`