SC-1216
Energy transfer
Lower Sec Science · Secondary 2 · Medium · Energy transfer
A 60 W filament lamp and a 60 W LED lamp are both switched on. Both use electrical energy at the same rate. Why does the LED lamp appear brighter?
- The LED converts a larger fraction of electrical energy into light than the filament lamp.
- The LED has a higher power rating than the filament lamp.
- The filament lamp converts all electrical energy into heat only.
- The LED uses no electrical energy to produce light.
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