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    Can somebody please explain to me how you know which form the energy has been transferred into? EG if 10% is useful light energy what form has the 90% been transferred into?
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    Well it would depend on the appliance.
    For a lightbulb the remaining 90% could be heat energy
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    Generally, I'd just use your common sense for this one, as said above, older light bulbs produce heat energy instead of light energy. Best of luck for Tuesday
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    (Original post by AzureCeleste)
    Well it would depend on the appliance.
    For a lightbulb the remaining 90% could be heat energy
    Thank you, I never seem to manage to get these right
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    (Original post by WestDragon)
    Generally, I'd just use your common sense for this one, as said above, older light bulbs produce heat energy instead of light energy. Best of luck for Tuesday
    Thank you, I always struggle with these questions. Good luck to you as well if you’re sitting it
 
 
 
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