A) \[-23\,\,V/m\]
B) \[11\,\,V/m\]
C) \[6\,\,V/m\]
D) \[-20\,\,V/m\]
Correct Answer: D
Solution :
Key Idea:\[E=-\frac{dV}{dx}\] Electric field \[E\] is given by \[E=-\frac{dV}{dx}\] Given, \[V=5{{x}^{2}}+10x-4\] \[\therefore \] \[E=\frac{dV}{dx}=10x+10\] At\[x=1,\,\,E=-(10\times 1+10)=-20\,\,V/m\]You need to login to perform this action.
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