Im a high school student/newbie at this stuff. In physics class we just started going over the electric grid. My teach first talked about how transformers are used to get high voltages for long distance travel. If I understood him, he said transformers boost the voltage while droping the current. He used the formula P=EI to show this. What I don't understand is doesn't that go against E=IR? How can you boost the voltage without also boosting the current? Isn't current just a result of a voltage (higher voltage always means higher current)?