A camcorder has a power rating of 16 watts. If the output voltage from its battery is 9 volts, what current does it use?

Because of the parameters that we are given in the question, the right current formula that should be used for this physics problem is:

I = P/V

Where:

I = Current

P = Power and

V = Voltage

From the question, we are told that:

P = 16 W

V = 9 V

Thus, current = P/V = 16/9 = 1.78

Therefore, The current used by the camcorder is 1.8 Amphere.