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figure out how many amps are in a watt and x by 40

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15y ago
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1mo ago

To calculate the amperage of a 40-watt bulb, you need to use the formula: Amps = Watts / Volts. If the bulb operates at 120 volts (standard for US households), the amperage will be 0.33 amps (40 watts / 120 volts).

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Q: How do you work out how many amps a forty watt bulb uses?
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