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## Homework Statement

## Homework Equations

[itex]l = 0.02 m[/itex]

[itex]r = 0.3 m[/itex]

[itex]E = \frac{-d\phi}{dt}[/itex]

[itex]\phi = BA[/itex]

## The Attempt at a Solution

[itex]A = \pi 0.32^2 - \pi 0.3^2 = 0.0124\pi [/itex] .....Area "cut" by conductor

[itex]\phi = 1.5a_r0.0124\pi = 0.0186\pi a_r [/itex] ....change in flux in one revolution

[itex]1600 rev/min = 1600 rev/ 60 seconds = 1 rev / \frac{60}{1600} seconds[/itex]

[itex] E = \frac{-0.0186\pi a_r}{\frac{60}{1600}}[/itex]

[itex] E = -0.496\pi a_r V[/itex]

I'd just like someone to verify this please, and also I'm not sure about which end would be the anode. I think it'd be the end closest the origin, since the magnetic field is in the outward radial direction, [itex]a_r[/itex], the emf induced is in the [itex]-a_r[/itex] direction, and thus current would be flowing towards the origin, but I'm not sure if I went about handling the direction vectors the right way.