question_answer

A uniform metallic wire has a resistance of \[18\,\Omega \] and is bent into an equilateral triangle. Then, the resistance between any two vertices of the triangle is- [JEE Main 10-Jan-2019 Morning]

A) \[12\,\Omega \]

B) \[2\,\Omega \]

C) \[4\,\Omega \]

D) \[8\,\Omega \]

Correct Answer: C

Solution :

[c] A uniform wire resistance is. When it is bended into equilateral triangle then length of each side is same and its resistance is .