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If the electric potential at any point (x, y, z)m in space is given by V = 3x 2 volt. The electric field at the point (1, 0, 3)m will be

1. 3 Vm –1 , directed along positive x-axis
2. 3 Vm –1 , directed along negative x-axis
3. 6 Vm –1 , directed along positive x-axis
4. 6 Vm –1 , directed along negative x-axis

Correct answer: 6 Vm –1 , directed along negative x-axis

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