A) \[3\sqrt{2}\]
B) \[4\sqrt{2}\]
C) \[5\sqrt{2}\]
D) 7
Correct Answer: D
Solution :
\[{{E}_{x}}=-\frac{dV}{dx}=-(-5)=5;\]\[{{E}_{y}}=-\frac{dV}{dy}=-3\] and \[{{E}_{z}}=-\frac{dV}{dz}=-\sqrt{15}\] \[{{E}_{net}}=\sqrt{E_{x}^{2}+E_{y}^{2}+E_{z}^{2}}=\sqrt{{{(5)}^{2}}+{{(-3)}^{2}}+{{(-\sqrt{15})}^{2}}}=7\]
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