- #1
alexmath
- 35
- 0
Hello!
I'm still not clear on a few things:
For example: Let's say a manufacturer creates a device which runs at 120W (let's say a lightbulb). Does this mean that i can use which combination of voltage and current such that V*I=120W i want?
Another example: Let's say that the maximum voltage across a capacitor is 300v. Can i run it with as high current as i want as long as i don't exceed 300v?
My second question is that instead of adding resistors to decrease current can't we just add a transformer instead which will decrease voltage to produce the same current?
Thank you for answering!
I'm still not clear on a few things:
For example: Let's say a manufacturer creates a device which runs at 120W (let's say a lightbulb). Does this mean that i can use which combination of voltage and current such that V*I=120W i want?
Another example: Let's say that the maximum voltage across a capacitor is 300v. Can i run it with as high current as i want as long as i don't exceed 300v?
My second question is that instead of adding resistors to decrease current can't we just add a transformer instead which will decrease voltage to produce the same current?
Thank you for answering!