A) -1V
B) +2V
C) -2V
D) +1V
Correct Answer: D
Solution :
[d] Current from D to C\[~=1\text{ }A\] \[\therefore {{V}_{D}}-{{V}_{C}}=2\times 1=2V\] \[{{V}_{A}}=0\text{ }\therefore {{V}_{C}}=1V,\therefore {{V}_{D}}-{{V}_{C}}=2\] \[\Rightarrow {{V}_{D}}-1=2\text{ }\therefore {{V}_{D}}=3V\] \[\therefore {{V}_{D}}-{{V}_{B}}=2\text{ }\therefore 3-{{V}_{B}}\text{=2 }\therefore {{V}_{B}}=1V\]
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