A) \[20\,V/m\]
B) \[6\,V/m\]
C) \[11\,V/m\]
D) \[-23\,V/m\]
Correct Answer: A
Solution :
\[E=-\frac{dV}{dx}=-\frac{d}{dx}(5{{x}^{2}}+10x-9)=-10x-10\] \ \[{{}_{x=1}}=-10\times 1-10=-\,20\,V/m\]You need to login to perform this action.
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