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Using the Electrical Power Law, which is:

The current (measured in amps) equals the power (measured in watts) divided by the potential difference (measured in volts)

So a light bulb designed to use 60 watts of power when supplied with 120 volts must draw 60 watts divided by 120 volts, which is a current of 0.5 amps.

The same answer could be expressed in a few different ways:

  • 500 milliwatts
  • 500 mW
  • "1/2 an amp" !
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Wiki User

13y ago
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Wiki User

10y ago

On a 240 v supply, ¼ amp. On a 120 v supply, ½ amp. On a 12 v supply, 5 amps. In each case the light must be correct for the supply voltage used.

<<>>

The equation used to find this answer is I = W/E, Amps = Watts/Volts.

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Wiki User

13y ago

As the question appears above, there is no answer.

If the question was intended to say "... 120 volts...", then the light bulb draws 1/2 Ampere of current.

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Wiki User

12y ago

Assuming that the bulb is a 120 Volt rated bulb, I=P/E=60/120=.5 Amps. Where I=current, P=Watts, and E=Volts

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Wiki User

13y ago

60 watts divided by 120 volts = 0.5 Amps

0.5 Amps of current

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Wiki User

10y ago

The formula you are looking for is I = W/E. Amps = Watts/Volts.

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Wiki User

13y ago

.5 Amps.

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Anonymous

Lvl 1
3y ago

.5amps

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Q: How much current flows through a 60 watt bulb connected to 120 volts?
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