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If curl of a vector function is zero then this vector function can describe the
electric field. Using this idea, check which is an impossible electrostatic field.
a) E = K[(xy)î + (2yz)j +(3xz)k]
b) E = K[(y²)î + (2xy +z²)j + (2yz)k]
Here, K is a constant with
appropriate units.

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