How many amperes does a standard 4 watt light bulb use?

Answer 1

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.

Answer 2

A standard 4 watt light bulb typically uses around 0.03 amperes of current when connected to a standard 120-volt power source.

Answer 3

depends on the voltage using ohm's law: watts/voltage=current 4/120=0.033A or 4/240=0.0166A

Answer 4

Watts = Amps x Volts so you need to solve, I = W/E, 4/12 = ? amps.