A camcorder has a power rating of 10 watts. If the output voltage from its battery is 3 volts, what current does it use?

The power is calculated using the following rule:

Power = voltage * current

We are given that:

power = 10 watts

voltage = 3 volts

Substitute with the givens in the above equation to get the value of the current as follows:

P = V*I

10 = 3*I

current (I) = 10/3 amperes