I think the primary way we use electromagnetic force is in electric motors. That is because these are used in so many ways and places these days. From huge ones in cars to tiny ones that make your phone vibrate. So it would be to transform electric energy into mechanical energy on a more abstract level.
Another huge use is actually power generation - most power generation essentially uses the workings of an electric motor in reverse to turn mechanical energy into electric energy. Whether that is more directly (wind energy, hydro power) or indirectly (coal or nuclear plants, which generate steam that drives turbines mechanically).
And solar energy takes electromagnetic radiation aka light (not sure if you thought of that)and turns that somewhat more directly into electric energy.
Let's wait for more answers on Monday