Thirteen resistances each of resistance R Ω are connected in the circuit, as shown in the figure. The effective resistance between A and B is

Question

Thirteen resistances each of resistance R Ω are connected in the circuit, as shown in the figure. The effective resistance between A and B is <img class="img-fluid question-image" alt="Question" src="https://cdn.tardigrade.in/q/nta/p-cqttylisjpo3xp2x.jpg" /> (A) 2RΩ (B) (4 R/3 )Ω (C) (2 R/3) Ω (D) RΩ

Tardigrade Admin · Accepted Answer

From symmetry, we get the following circuit diagram for half circuit, <img class="img-fluid question-image" alt="Solution" src="https://cdn.tardigrade.in/q/nta/p-cqttylisjpo3w9gw.jpg" /> For half circuit, Râ²=(R/3) . Re q=(2 R/3)

Q. Thirteen resistances each of resistance $R Ω$ are connected in the circuit, as shown in the figure. The effective resistance between $A$ and $B$ is

$2 R Ω$

$\frac{4 R}{3} Ω$

$\frac{2 R}{3} Ω$

$R Ω$

From symmetry, we get the following circuit diagram for half circuit,

For half circuit, $R^{'} = \frac{R}{3}$ .
$R_{e q} = \frac{2 R}{3}$

Q. Thirteen resistances each of resistance RΩ are connected in the circuit, as shown in the figure. The effective resistance between A and B is

2RΩ

34R​Ω

32R​Ω

RΩ