to generate an electric current to increase the strength of the magnet to heat the copper wire to transfer protons to the lightbulb
A bar magnet was moved quickly back and forth in a coil of copper wire. The ends of the wire were connected to a small lightbulb. Which of the following was the device created for?

Options:
- to generate an electric current
- to increase the strength of the magnet
- to heat the copper wire
- to transfer protons to the lightbulb

to generate an electric current