The potential $V$ is varying with $x$ and $y$ as $V = \frac{1}{2}({y^2} - 4x)\,volts$ The field at $(1\,m,\,1\,m)$ is
The potential $V$ is varying with $x$ and $y$ as $V = \frac{1}{2}({y^2} - 4x)\,volts$ The field at $(1\,m,\,1\,m)$ is
- A
$2\hat i\, + \,\hat j\,\,V/m$
- B
$-\,2\hat i\, + \,\hat j\,\,V/m$
- C
$2\hat i\, - \,\hat j\,\,V/m$
- D
$-\,2\hat i\, + \,2\hat j\,\,V/m$
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