An MRI machine creates very rapidly changing magnetic fields. The field near a typical MRI machine rises from $0$T to $2\mathrm{.}5$T in $200$us$.$ Suppose a technician holds his hand near an MRI machine so that the axis of his $2\mathrm{.}0$ cm$-$diameter gold wedding band is parallel to the field.

What emf is induced in the ring as the field changes? Show work

If the band is made of a gold alloy with resistivity $6\mathrm{.}2*10^-8$ ohms$*$m and has a cross section area of $4\mathrm{.}0$mm$^2,$ what is the induced current in the ring? Show work.