Question 71 of 380

A square-shaped wire with a resistance of each side $3\Omega$ is bent to form a complete circle. The resistance between two diametrically opposite points of the circle in a unit of $\Omega$ will is, _____.

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Answer: 3

We know that in a parallel combination of resistors the net resistance, $\dfrac{1}{{R}_{P}}=\dfrac{1}{{R}_{1}}+\dfrac{1}{{R}_{2}}+\dfrac{1}{{R}_{3}}+....$ and when they are connected in series then net resistance is, $R={R}_{1}+{R}_{2}+{R}_{3}+......+{R}_{n}$. A square-shaped wire with a resistance of each side is, $3\Omega$, then the circuit is,
then the net resistance is $3\Omega$.