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A long straight cable of length $I$ is placed symmetrically along the z-axis and has radius $a$. The cable consists of a thin wire and a co-axial conducting tube. An alternating current $I(t)=I_{0}$ sin $(2\pi vt)$ flows down the central thin wire and returns along the co-axial conducting tube. The induced electric field at a distance $s$ from the wire inside the cable is $\mathbf{E}(\mathrm{s}, \mathrm{t})=\mu_{0} \mathrm{l}_{0} \mathrm{~V} cos (2\pi vt)$. In $\left(\frac{s}{a}\right) \hat{k}$, compare the conduction current 10 with the displacement current $I_{0}^{\mathrm{d}}$
A long straight cable of length $I$ is placed symmetrically along the z-axis and has radius $a$. The cable consists of a thin wire and a co-axial conducting tube. An alternating current $I(t)=I_{0}$ sin $(2\pi vt)$ flows down the central thin wire and returns along the co-axial conducting tube. The induced electric field at a distance $s$ from the wire inside the cable is $\mathbf{E}(\mathrm{s}, \mathrm{t})=\mu_{0} \mathrm{l}_{0} \mathrm{~V} cos (2\pi vt)$. In $\left(\frac{s}{a}\right) \hat{k}$,
compare the conduction current 10 with the displacement current $I_{0}^{\mathrm{d}}$
CBSE | Class 12 | Electromagnetic Waves | NCERT Exemplar | Physics
A long straight cable of length $I$ is placed symmetrically along the z-axis and has radius $a$. The cable consists of a thin wire and a co-axial conducting tube. An alternating current $I(t)=I_{0}$ sin $(2\pi vt)$ flows down the central thin wire and returns along the co-axial conducting tube. The induced electric field at a distance $s$ from the wire inside the cable is $\mathbf{E}(\mathrm{s}, \mathrm{t})=\mu_{0} \mathrm{l}_{0} \mathrm{~V} cos (2\pi vt)$. In $\left(\frac{s}{a}\right) \hat{k}$,
compare the conduction current 10 with the displacement current $I_{0}^{\mathrm{d}}$

The displacement will be,

$I_{0}^{\mathrm{d}} / \mathrm{I}_{0}=(\mathrm{am} / \lambda)^{2}$

i

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