Question

In the circuit shown, if a conducting wire is connected between points $A$ and $B$ , the current in this wire will

• A. flow from $A$ to $B$ .
• B. flow in the direction which will be decided by the value of $V$ .
• C. be zero.
• D. flow from $B$ to $A$ .

Answer 1

Answer: (D)

$V_A-V_B=\left[V-\left(\frac{V}{8}\times 4\right)\right]-\left[V-\left(\frac{V}{4}\times 1\right)\right]$
$\text{=-}\frac{V}{2}+\frac{V}{4}=-\frac{V}{4}\Rightarrow V_B>V_A$