Find the equivalent resistance about any branch of the base of the square pyramid shown. Assume resistance of each branch is R .

Question

Find the equivalent resistance about any branch of the base of the square pyramid shown. Assume resistance of each branch is R . <img class="img-fluid question-image" alt="Question" src="https://cdn.tardigrade.in/q/nta/p-vxccd6t3lze4.png" /> (A) (7 R/15) (B) (8 R/15) (C) (R/2) (D) none of these

Tardigrade Admin · Accepted Answer

Looking at the circuit from above, we can see that between any two adjacent points (let say A and B), the circuit is symmetric so the junction P can be disconnected. <img class="img-fluid question-image" alt="Solution" src="https://cdn.tardigrade.in/q/nta/p-vxccd6t3pevn.png" />

Q. Find the equivalent resistance about any branch of the base of the square pyramid shown. Assume resistance of each branch is $R$ .

$\frac{7 R}{15}$

$\frac{8 R}{15}$

$\frac{R}{2}$

none of these

Looking at the circuit from above, we can see that between any two adjacent points (let say A and B), the circuit is symmetric so the junction P can be disconnected.

Q. Find the equivalent resistance about any branch of the base of the square pyramid shown. Assume resistance of each branch is R .

157R​

158R​