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How many Watts would one string of 300 Christmas tree bulbs with 2.5 volt bulbs working off of 120V power source equate to?
Wiki User
∙ 15y ago
If you can tell me the resistance across the bulb, I can tell you the total wattage. Watt = amps x volts. I (amps) = E (volts 2.5)/ R (resistance in ohms). Calculate for amps draw on one lamp and then times 300 will give you total amperage. Take this value times total voltage and it will give you total wattage.
Wiki User
∙ 15y ago
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