Answer:
Democritus
Explanation:
Greek philosophers Leucippus and Democritus first developed the concept of the atom in the 5th century BC
Through radiation of the sun's rays.
Recall that to compute for the emf of a circuit given current and inductance, we must recall that

where I is the current (A), M is the mutual inductance (h), and t is the time (ms). Since the current must not exceed 80.0 V, we have



From this, we see that it must take at least 0.35 ms so it doesn't exceed 80 V.
Answer: 0.35 ms