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In a certain region of space, the potential is given by: \( V=k\left[2 x^{2}-y^{2}+z^{2}\right] \). The electric field at the point \( (1,1,1) \) has magnitude \( = \)
\( \mathrm{P} \)
(A) \( \mathrm{k} \sqrt{6} \)
(B) \( 2 \mathrm{k} \sqrt{6} \)
(C) \( 2 \mathrm{k} \sqrt{3} \)
(D) \( 4 \mathrm{k} \sqrt{3} \)
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