The potential at the point x (measured in\[\mu m\]) due to some charges situated on the x-axis is given by \[V(x)=20({{x}^{2}}-4)\] volt. The electric field E at \[x=4\mu m\]

\[\left( 5/3 \right)\text{ }volt/\mu m\]and in the -ve x direction

\[\left( 10/9 \right)\text{ }volt/\mu m\]and in the +ve x direction

\[\left( 5/3 \right)\text{ }volt/\mu m\] and in the +ve x direction

\[\left( 10/9 \right)\text{ }volt/\mu m\]and in the -ve x direction

The potential at the point x (measured in\[\mu m\]) due to some charge

1.	The potential at the point x (measured in\[\mu m\]) due to some charges situated on the x-axis is given by \[V(x)=20({{x}^{2}}-4)\] volt. The electric field E at \[x=4\mu m\]
A.	\[\left( 10/9 \right)\text{ }volt/\mu m\]and in the +ve x direction
B.	\[\left( 5/3 \right)\text{ }volt/\mu m\]and in the -ve x direction
C.	\[\left( 5/3 \right)\text{ }volt/\mu m\] and in the +ve x direction
D.	\[\left( 10/9 \right)\text{ }volt/\mu m\]and in the -ve x direction
Answer» B. \[\left( 5/3 \right)\text{ }volt/\mu m\]and in the -ve x direction