Physics homework electrical power?
Can someone please explain task 2 to me? Or maybe send me the result. I tried it, but I'm not sure.
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You have fixed costs (8€ bulbs, 19.50€ the energy saving lamp).
You have consumption costs.
Incandescent lamp: 0,060kW * 8000h * 0.15€/kWh
Energy saving lamp: 0,001kW * 8000h * 0.15€/kWh
Total lighting costs are fixed costs + consumption costs.