Question

In the network of resistance, each of value r, equivalent resistance between A and B is –

• A. $\frac{r}{2}$
• B. r
• C. $\frac{3}{4}$r
• D. None of these

Answer 1

Answer: (C)

$\frac{3}{4}$r

Answer 2

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⇒          

R_eq = $\frac{r.3r}{r + 3r} = \frac{3}{4}r$