Talking about power wastage. I would like to know if a device is wasting or not. I have this two situations.
1. A 2V device running on a battery
2. A 4V device running on a battery
Both are running on a 6V battery. My question is will both of them using the power of 6V? Or they will be using 2V and 4V respectively? If it is the first case, both devices will die off at the same time, but for the second case, the second will die off twice as fast.
what does power wastage depend on? Current or voltage or power?
Please explain, i am new, thank you.