A) \[{{V}_{A}}=-1.5\,V,\,{{V}_{D}}=+2\,V\]
B) \[{{V}_{A}}=+1.5\,V,\,{{V}_{D}}=+2\,V\]
C) \[{{V}_{A}}=+1.5\,V,\,{{V}_{D}}=+0.5\,V\]
D) \[{{V}_{A}}=+1.5\,V,\,{{V}_{D}}=-0.5\,V\]
Correct Answer: D
Solution :
Potential difference between A and B \[{{V}_{A}}-{{V}_{B}}=1\times 1.5\] \[\Rightarrow \,\,\,{{V}_{A}}-0=1.5V\Rightarrow {{V}_{A}}=1.5V\] Potential difference between B and C \[{{V}_{B}}-{{V}_{C}}=1\times 2.5=2.5V\] Þ \[0-{{V}_{C}}=2.5V\Rightarrow {{V}_{C}}=-2.5V\] Potential difference between C and D \[{{V}_{C}}-{{V}_{D}}=-2V\]\[\Rightarrow \,\,\,-2.5-{{V}_{D}}=-2\Rightarrow \,{{V}_{D}}=-0.5V.\]
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