Question

Problem,

Answer 1

Open circuit,

Answer 2

Magnet passes through the coil, if the circuit was closed current will flow thus creating a magnetic field that opposes the magnet.
But because the circuit is a opened circuit,current can not flow, thus the magnet moves freely feeling no Lenz's effect, so lenz's law is not applied here because I = 0
So B of coil = 0.