Open Question: Electricity Efficiency Percentage Question?
15 minutes is 0.25 hours
100W is 0.1 kW.
So the bulb CONSUMES (0.25 * 0.1) kWh = 0.025 kWh
100W is 0.1 kW.
So the bulb CONSUMES (0.25 * 0.1) kWh = 0.025 kWh
If the bulb PRODUCES 0.0015kWh of light energy, the efficiency is equal to:
energy produced divided by energy consumed = 0.0015 / 0.025 = 0.06
expressed as a percentage this is = 6% efficient (not very good efficiency !)
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