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GATE Electrical Engineering (EE) 2016 Shift 1 Solved Paper

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Question : 23

Total: 65

In cylindrical coordinate system, the potential produced by a uniform ring charge is given by ‌φ=‌f(r,z), where f is a continuous function of r and z. Let

be the resulting electric field. Then the magnitude of ∇×

increases with r
is 0
is 3
decreases with z

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