You want to use the idea of electromagnetic induction to make the bulb in your small flashlight glow; it glows when the potential difference across it is $1\mathrm{.}5$ V$.$ You have a small bar magnet and a coil with $100$ turns, each with area $3\mathrm{.}0$ x times $10^4$ m$^2.$ The magnitude of the B$$ field at the front of the bar magnet's north pole is $3\mathrm{.}0\backslash$times $10^2$ T and reaches $0$ T when it is about $4\mathrm{.}0$ cm away from the pole.

A$)$ With what speed should you move the magnet to make the bulb light?