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Q.
In the circuit shown, if a conducting wire is connected between points $A$ and $B$, the current in this wire willsss
Current Electricity
Solution:
Current will flow from higher to lower potential.
Before connecting wire from $A$ to $B$, voltage drop
across $4\, \Omega=V \times \frac{4}{4+4}=\frac{V}{2}$
Voltate drop across $1 \, \Omega=V \times \frac{1}{1+3}=\frac{V}{4}$
$\therefore $ voltage drop at $A=V-\frac{V}{2}=\frac{V}{2}$
and volatage drop at $B=V-\frac{V}{4}=\frac{3 V}{4}$
So, $V_{B}>V_{A}$
Hence, on connecting wire between points $A$ and $B$, the current will flow from $B$ to $A$.
