In Circuit-$1$ and Circuit-$2$ shown in the figures, $R_1=1\mathrm{\Omega },R_2=2\mathrm{\Omega }$ and $R_3=3\mathrm{\Omega }$.
$P_1$ and $P_2$ are the power dissipations in Circuit-$1$ and Circuit-$2$ when the switches $S_1$ and $S_2$ are in open conditions, respectively.
$Q_1$ and $Q_2$ are the power dissipations in Circuit-$1$ and Circuit-$2$ when the switches $S_1$ and $S_2$ are in closed conditions, respectively.

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Which of the following statement(s) is(are) correct?

• Correct answer
  A

  When a voltage source of $6\mathrm{V}$ is connected across $A$ and $B$ in both circuits, $P_1<P_2$
• Correct answer
  B

  When a constant current source of $2$Amp is connected across $A$ and $B$ in both circuits, $P_1>P_2$
• Correct answer
  C

  When a voltage source $6\mathrm{V}$ is connected across $A$ and $B$ in Circuit-$1$, $Q_1>P_1$
• D

  When a constant current source of $2$ Amp is connected across $A$ and $B$ in both circuits, $Q_2<Q_1$

Hence, the correct answer is options: 'A', 'B', 'C'.