Q 12-03-134JEE MainJEE Main 2023 (15 Apr, Shift 1)Medium
A network of four resistances is connected to $9\ \text{V}$ battery, as shown in figure. The magnitude of voltage difference between the points $A$ and $B$ is ______ V.
Numerical value type. Enter your answer.
Answer: 3
Each branch has $6\ \Omega$ and carries $1.5\ \text{A}$. Measuring from the left corner:
drop to $A$: $1.5\times2=3\ \text{V}$; drop to $B$: $1.5\times4=6\ \text{V}$.
$|V_A-V_B|=6-3=3\ \text{V}$.
Solution by Sreeraj P, M.Sc Physics