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, \[E=-(10\times 1+10)=-20\,\text{V/m}\]You need to login to perform this action.
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