Topic 11.2
Topic 11.2
Topic 11.2
2 [17 marks]
1. [Maximum mark: 8] 20N.2.HL.TZ0.9
The diagram shows an alternating current generator with a rectangular coil
rotating at a constant frequency in a uniform magnetic field.
The graph shows how the generator output voltage V varies with time t.
Electrical power produced by the generator is delivered to a consumer some
distance away.
(b(i)) The average power output of the generator is 8. 5 × 10 W.
5
Rate of consumption of natural gas = 14.6 kg s–1 Specific energy of natural gas =
55.5 MJ kg–1 Efficiency of electrical power generation = 59.0 % Mass of CO2
generated per kg of natural gas = 2.75 kg One year = 3.16 × 107 s