1.

Electric potential at any point is \[V=-5x+3y+\sqrt{15}z\], then the magnitude of the electric field is         [MP PET 2002]

A.            \[3\sqrt{2}\]                         
B.            \[4\sqrt{2}\]
C.            \[5\sqrt{2}\]                         
D.            7
Answer» E.


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