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Homework Statement
The diagram shows two wires; wire 1 and wire 2. The charge carriers in wire 1 (of circular cross section and radius R) have a drift speed down the wire that is not constant across the wire. Instead, the drift speed rises linearly from zero at the circumference (r=R) to at the center (r = 0), according to vd1(r)=Vo(1-(r/R)).The second wire (wire 2) has the same radius, the same density of charge carriers and a constant drift speed given by vd1(r)= fVo. Evaluate the ratio of the current carried by wire 2 to the current carried by wire 1, when f = 0.490.
Homework Equations
[tex] I=nqAV_{d}[/tex]
[tex] \frac{qnAV_{d2}}{qnAV_{d1}}[/tex]
The Attempt at a Solution
So since q,n,A are the same they cancel leaving:
[tex]\frac{I_{2}}{I_{1}}= \frac{V_{d2}}{V_{d1}}[/tex]
I need to find vd now.
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