thx for the prompt reply.

regarding my first qn, if u insert the magnet at a greater speed, the needle of the galvanometer will deflect at a greater magnitude and speed, right? Any explanations?

From the simulation, I can infer that if you increase the radius of the coil, less current will be produced, right? Any explanations?

By constantly inserting the magnet in and out to produce electricity, will the magnet eventually lose a bit of its magnetism?

Are there any simulations here to show the change in magnetic flux linkage in the coil? not just how the needle deflect.

I would like to see the imaginary magnetic field lines around, esp how the magnetic field lines look when the magnet is inserted into the solenoid?