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Two.
More Information:Refer to the electrical formula:Amps * Volts = Watts
The above answer is correct for HOUSEHOLD bulbs in the U.S. or Canada where we use 120V.
A * 120V = (60 * 4)
A = (60*4)/120
A = 240/120
A = 2
But of course, the answer would be different if the bulb voltage were different.
Wiki User
∙ 13y ago
A standard 4 watt light bulb typically uses around 0.03 amperes of current when connected to a standard 120-volt power source.
Wiki User
∙ 16y agodepends on the voltage using ohm's law: watts/voltage=current 4/120=0.033A or 4/240=0.0166A
Wiki User
∙ 14y agoWatts = Amps x Volts so you need to solve, I = W/E, 4/12 = ? amps.
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