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2023 · Specimen · 5054/01 | Q12

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CIE-5054-2023-SP-p01 · Question 12

Take the gravitational field strength as 9.8 N/kg (acceleration of free fall 9.8 m/s²), unless a question states otherwise.
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12 Which expression gives the efficiency of an a.c. generator? electricalenergyoutput A totalenergyinput electricalenergyoutput B thermalenergyoutput totalenergyoutput C electricalenergyinput thermalenergyoutput D totalenergyinput

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5054/01/SP/23Cambridge O Level Physics 5054 · Specimen 2023 · Paper 1 · Question 12