Question

A uniform wire resistance of $24\Omega$ is bent in the following shape. The effective resistance between A and b is:

• A. $19\Omega$
• B. 10 $\Omega$
• C. $\frac{16}{3}\Omega$
• D. None of these

Answer 1

The correct option is B 10 $\Omega$

Given resistance of each part will be

Each side have resistance $=24/4=6\Omega$

Resistance of traingle $=12$ in parallel with $6=12\times 6/18=4\Omega$

Net resistance $=4$ in series with $6=4+6=10\Omega$