In the circuit shown in the figure, if potential at point $A$ is taken to be zero, the potential at point…

In the circuit shown in the figure, if potential at point $A$ is taken to be zero, the potential at point $B$ is
  1. $-1 \mathrm{~V}$
  2. $+2 \mathrm{~V}$
  3. $-2 \mathrm{~V}$
  4. $+1 \mathrm{~V}$

Solution

By KVL along path $A C D B$ $\begin{gathered} V_A+1+(1)(2)-2=V_B \\ 0+1=V_B \\ V_B=1 \mathrm{~V} \end{gathered}$ ~

Asked in: NEET 2011 (Mains)

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