A flashlight bulb uses 2.4 W of power when the current in the bulb is 0.8 A. What is the voltage difference?

3 Volts

Explanation:

Because Power = Voltage x Current, so if you substitute the values into the equation, it would be :

2.4 W = Voltage x 0.8 A

Then if you rearrange the equation, it would be :

2.4 W / 0.8 A = Voltage

Which is :

3 V = Voltage

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explanation:

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