Magnetism: Solving Question on Induced E in Windings of Coil

[tayi]

Homework Statement

Given: A tightly wound circular coil has
81.9 turns , each of radius 0.1 m. The uniform
magnetic field is in a direction perpendicular
to the plane of the coil. The field increases
linearly from 0 T to 0.851 T in a time of
0.364 s .
What E is induced in the windings of the
coil?
Answer in units of V.

Homework Equations

emf=Blv
emf(average)=magnetic flux/time

The Attempt at a Solution

I think this can be solved using magnetic flux, but i don't reallly know how to go about doing it

 

[rock.freak667]

Homework Equations

emf=Blv
emf(average)=magnetic flux/time

The Attempt at a Solution

I think this can be solved using magnetic flux, but i don't reallly know how to go about doing it

Start with your equation

emf = -dΦ/dt where Φ=NBA, thus your equation becomes

emf = -d/dt(NBA)

N and A are constant so emf=-NA dB/dt. So how you would get dB/dt which is the rate of change of the magnetic field per unit time.