In a source free region in vacuum, if the electrostatic potential.
ϕ = 4x2 + 3y2 + Cz2, the value of constant C must be _____
1
-4
2
-3
3
-7
4
-14
In a source free region in vacuum, if the electrostatic potential.
ϕ = 4x2 + 3y2 + Cz2, the value of constant C must be _____