Energy Efficiency Investigation
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Energy Efficiency Investigation
Plan and interpret the investigation
Three lamps were tested under the same conditions. Each received 100 J of electrical energy. The light sensor reading was converted into useful light energy. The remaining energy was mostly transferred to the surroundings as heat.
Lamp
Electrical energy in (J)
Useful light energy out (J)
Energy transferred as heat (J)
Incandescent
100
10
90
Halogen
100
20
80
LED
100
40
60
- Incandescent
- Halogen
- LED
- They are all equal
2 printable pages
Page 1
Page 2
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