I am studying electrical engineering, but I still have some doubts about Ohm's law and electrical power.
According to Ohm's law: \$I=\dfrac{V}{R}\$ So that means voltage is proportional to current.
Higher voltage = higher current.
Now I was taught that in order to transmit on power lines, the voltage needs to be transformed higher so that according to \$P = U * I\$, current decreases and there is less heat loss.
But wasn't current proportional to voltage? How can a higher voltage not induce a higher current?
For another example let's take a 100 W light bulb. I was told that if I have a 10 V Voltage, the light bulb "will drain" 10 Amps in order to function.
Is this wrong? Is 100 W the amount of maximum power the light bulb can handle or the power it needs, and how can it "take" 10 Amps if current depends on the applied voltage and bulb resistance?
I don't understand how current doesn't depend on the applied voltage according to Ohm's law.