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# The electric potential V at any point (x, y, z), all in meters in space is given by V=4x2 volt. The electric field at the point (1, 0, 2) in volt/meter is :8 along positive X-axis16 along negative X-axis16 along positive X-axis8 along negative X-axis

A
8 along positive X-axis
B
16 along positive X-axis
C
16 along negative X-axis
D
8 along negative X-axis
Solution
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#### As V=4x2, so the electric field→E=−dVdx^i=−8x^iAt (1,0,2),→E=8(1)(−^i)=8(−^i)Ans: (D)

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