What is the EMF of a coil with a changing magnetic flux?

[ian 610]

Homework Statement

what is the emf if the magnetic flux through a coil at 50 turns is reduced from 0.5 weber to 0 weber in 0.2 seconds?

Homework Equations

3. The Attempt at a Solution :

dont even know how to get started with this problem

 

[ehild]

Try to read this page:

http://hyperphysics.phy-astr.gsu.edu/hbase/electric/farlaw.html

ehild

 

[ian 610]

thanks so much ehild.. helped me much.. ;p