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(B) To find the equivalent resistance between points $A$ and $B$, we can use the symmetry of the circuit or nodal analysis. Let a potential difference

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$21$

Vedclass · Answer

(B) To find the equivalent resistance between points $A$ and $B$, we can use the symmetry of the circuit or nodal analysis. Let a potential difference of $1 	ext{ V}$ be applied between $A$ and $B$.Let the total current entering at $A$ be $i$. The circuit can be simplified by recognizing it as a bridge circuit.Using Kirchhoff's laws or by identifying the symmetry, the equivalent resistance $R_{eq}$ is calculated as follows:$R_{eq} = \frac{21}{5} \Omega$.Comparing this with the given expression $\frac{x}{5} \Omega$, we get:$\frac{x}{5} = \frac{21}{5}$Therefore, $x = 21$.

The equivalent resistance between the points $A$ and $B$ in the following circuit is $\frac{x}{5} \Omega$. The value of $x$ is . . . . . . .

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