রোধ

A wire has resistance of $12 \Omega$ . It is cut into two parts and both have are connected in parallel. The new resistance is?

হানি নাটস

As the wire is bent at its mid point, thus resistance of each segment $R=\frac{12}{2}=$ $6 \Omega$
Both are in parallel
$\therefore$ Effective resistance between $A$ and $B$
$R^{\prime}=\frac{R_{1} \times R_{2}}{R_{1}+R_{2}}=\frac{6 \times 6}{6+6}=3 \Omega$

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