A) 40V
B) - 40V
C) 20V
D) - 60V
Correct Answer: B
Solution :
\[{{W}_{ext}}={{q}_{0}}\Delta V\] \[{{\left( {{W}_{AB}} \right)}_{ext}}=q\left( {{V}_{B}}-{{V}_{A}} \right)\] \[40\,\mu J=1\,\mu C\left( {{V}_{B}}-{{V}_{A}} \right)\] \[{{V}_{A}}-{{V}_{B}}=-\,40\,V\]You need to login to perform this action.
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