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