An infinite line charge of uniform electric charge density - lies along the axis of an electrically conducting infinite cylindrical shell of radius R- At time t - 0- the space inside the cylinder is filled with a material of permittivity - and electrical conductivity - The electrical conduction in the material follows Ohm-s law- Which one of the following graphs best describes the subsequent variation of the magnitude of current density jt at any point in the material-

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Standard X

Physics

Electric Circuit and Circuit Diagram

An infinite l...

Question

An infinite line charge of uniform electric charge density $λ$ lies along the axis of an electrically conducting infinite cylindrical shell of radius $R$ . At time $t = 0$ , the space inside the cylinder is filled with a material of permittivity $ε$ and electrical conductivity $σ$ . The electrical conduction in the material follows Ohm's law. Which one of the following graphs best describes the subsequent variation of the magnitude of current density $j (t)$ at any point in the material?

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Solution

The correct option is D

Charge will flow from line charge radially outward towards cylindrical shell because of presence of conducting medium present between them.

$j = σ E$

Discharging RC circuit.

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The correct option is D Charge will flow from line charge radially outward towards cylindrical shell because of presence of conducting medium present between them. j=σE Discharging RC circuit.

The correct option is D

Charge will flow from line charge radially outward towards cylindrical shell because of presence of conducting medium present between them.

$j = σ E$

Discharging RC circuit.