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A mobile phone is 35% efficient. Over half an hour 11 kJ of energy is transferred to the phone. Calculate the amount of energy usefully transferred by the machine over half an hour.
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A mobile phone is 35% efficient. Over half an hour 11 kJ of energy is transferred to the phone.

Calculate the amount of energy usefully transferred by the machine over half an hour.

User Nhooyr
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1 Answer

12 votes
12 votes

Answer:-

  • Energy Transferre=11KJ
  • Efficiency=35%

☆Usefully transferred energy:-


\\ \sf\longmapsto 35\%\:of 11


\\ \sf\longmapsto 35\%* 11


\\ \sf\longmapsto (35)/(100)* 11


\\ \sf\longmapsto (385)/(100)


\\ \sf\longmapsto 3.85KJ


\\ \sf\longmapsto 3850J

User Eerik Sven Puudist
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