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GATE EC 2015 Set 2 — Question 34

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NAT+1 / -0EasyDifferential & Integral FormsMaxwell's EquationsElectromagneticsGradient, Divergence & CurlVector CalculusEngineering Mathematics

Electromagnetics → Maxwell's Equations → Differential & Integral Forms

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In a source free region in vacuum, if the electrostatic potential ϕ=2x2+y2+cz2\phi = 2x^2 + y^2 + cz^2, the value of constant cc must be ___________.
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