Question

A wire of resistance 3 Ω is cut into three pieces, which are then joined to form a triangle. The equivalent resistance between any corners of the triangle is :

23 Ω
12 Ω
13 Ω
32 Ω​

Answer 1

Explanation:

Answer is 2/3 ohm

Wire of resist 3 ohm cut into 3 equal pieces means each part has resistance 1 ohm

After forming triangle, when effective resistance across any two vertices will show 2 ohm and 1 ohm in parallel

so effective resistance will be 2*1/2+1 = 2/3 ohm