Question

In the given circuit the potential at point $B$ is zero, the potential at points $A$ and $D$ will be

• A. $V_{A}=4\,V$; $V_{D}=9\,V$
• B. $V_{A}=3\,V$; $V_{D}=4\,V$
• C. $V_{A}=9\,V$; $V_{D}=3\,V$
• D. $V_{A}=4\,V$; $V_{D}=3\,V$

Answer 1

Answer: (D)

$V_{A}-V_{B}=2 \times 2=4\,V$
$\therefore V_{A}-0=4\,V$
$\Rightarrow V_{A}=4\,V$
According to question $V_{B}=0$
Point $D$ is connected to positive terminal of battery of emf $3 \,V$.