I am just wondering what voltage to use in this situation when calculating the power consumption of a circuit. (P=VI)
I have a 24V DC power supply with 2 x 3V DC motors in the circuit. I have transformed to voltage to suit the motors and have an Ammeter recording the current.
Would it be correct to use the 24V (supply) in the overall circuit power calculation or do you use 3V as that is what the motors are running at?