Do you know Faraday's law? This is a pretty straight forward application of Faraday's law. Just do the EMF induced in 1 turn of the wire, and then multiply by 100 since there's 100 turns. It's just that simple.

It's finding the EMF induced in one turn that's the problem. I know EMF=-d[tex]\Phi[/tex]/dt but I don't know how to find that when I'm just given the rate of increase of B.