Current produced by varying magnetic flux

[Tosh5457]

I'm translating the problem, so sorry for the errors.

Homework Statement

Radius of the upper circumference = 5cm
Radius of the lower circumference = 9cm
Resistance/meter = 3.00 ohm/meter
B is the magnetic field: DB/dt = 2.00 T/s

What's the magnitude of the current, and where does the current points to?

Homework Equations

EMF = $-N \ \frac{\Delta \Phi_B}{\Delta t} \ \ \mbox{or} \ \ -N \ \frac{d\Phi_B }{dt}$
V = RI

The Attempt at a Solution

 

[WatermelonPig]

Well, find the magnetic flux from the external field; the current should be produced in order to oppose an change in magnetic flux.