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A conductor in the shape of a cylindrica...

A conductor in the shape of a cylindrical shell of outer and inner radii 2r and r is connected to an ideal battery as shown. The length of the conductor is m. The charge carrier density in the conductor is `n times 8 times 10^28 3^-3` The value of `r=1/6 cm` If the current through the battery is 4A, the drift velocity of electrons at a distance 1.5r from the axis of the conductor is ___________ ` times 10^-6 m//s` .

Text Solution

Verified by Experts

`i=nAev_d`
and e are constant.
As area of cross-section varies, `v_d` changes. `implies` at 1.5 r from axis of cylinder, `A=2pi(1.5r)(l)`
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