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Coefficient of Viscosity

A time varyin...

Question

A time varying (AC) current is passes through a wire would resistance. It conductivity

A

is same as DC conductivity

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B

increases as compared to DC conductivity

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C

decreases as compared to DC conductivity

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D

none of these

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Solution

The correct option is C decreases as compared to DC conductivity
Its conductivity decreases as compared to DC conductivity because conductivity depends on area. Since the area is more conductivity is less
Conductivity, $σ = \frac{l}{R . A}$

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