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Physics
Physics
Problem
The displacement current density
J
D
\mathbf{J}_D
J
D
introduced by Maxwell is expressed as a)
σ
E
\sigma\,\mathbf E
σ
E
b)
ε
0
2
∂
E
∂
t
\dfrac{\varepsilon_0}{2}\,\dfrac{\partial \mathbf E}{\partial t}
2
ε
0
∂
t
∂
E
c)
μ
r
ε
0
∂
E
∂
t
\mu_r\,\varepsilon_0\,\dfrac{\partial \mathbf E}{\partial t}
μ
r
ε
0
∂
t
∂
E
d)
ε
0
∂
E
∂
t
\varepsilon_0\,\dfrac{\partial \mathbf E}{\partial t}
ε
0
∂
t
∂
E
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