#7 (4 pts.) For a conductor \(J = axa_x - ya_y - za_z \text{ A/m}^2\), finds \(a\) if the volume charge density is time-invariant.
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The divergence of a vector field is given by: ∇ · J = ∂(ax)/∂x + ∂(-ay)/∂y + ∂(-az)/∂z Since the current density is time-invariant, the current density components (ax, -ay, -az) are constant with respect to time. Show more…
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