Which of the following represents the most powerful earthquake? kuril islands, 8.5 great chilean, 9.5 san francisco, 7.8 prince william sound, 9.2

The answer is Great Chilean, 9.5.

In getting the magnitude of the induced emf in the coil as a function of time, the formula of it would be the length times the quotient of intensity of the distance and time travel times total intensity time total resistance. I think with that formula, you can get the magnitude of the induced emf.