# Science

How much current does a flashlight use if its battery supplies 3.0 Volt and the bulb has a resistance of 4.0 Alpha

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1. Resistance is 4.0 Alpha...? I think you mean 4.0 Ohms (Ohm has symbol of capital letter of Omega, Ω). Alpha (α) is different, it is the temperature coefficient of resistance.

Anyway, you use the formula:
I = V/R
where
I = current (Ampere)
V = voltage (Volts)
R = resistance (Ohms)

hope this helps~ `u`

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