- #1
caljuice
- 70
- 0
When measuring voltage or current, why are we suppose to crank up the power supply? For example, when we are measuring voltage we are supposed to make sure sure the current is set high enough so it won't limit the voltage, and vice versa for measuring current. I thought if you crank up voltage in a circuit that would already create current. I also notice my circuit won't work if the current is too low, even though the voltage is high but why do you need to put current in a circuit if voltage creates current?