Voltage Induced in Coil: Hall Effect

[zooropa]

Homework Statement

[STRIKE][STRIKE][/STRIKE][/STRIKE]

http://img697.imageshack.us/img697/2317/img11l.jpg

(a = 0.10 m and b = 0.16 m)

i=3t^3 - 5t

(i - ampéres t - seconds)

Determine the voltage induced in the coil to the instant t = 3 sec. well as the current direction.

Homework Equations

Hall efect

The Attempt at a Solution

A= 0.016 m^2
For t= 3 sec ... i=3*3^3 - 5*3 ...i= 66 ampéres

 

[ideasrule]

V=-d(phi)/dt, so first find an equation for phi in terms of i. Deriving that equation with respect to time will get you d(phi)/dt.