A-LevelPhysicsAlternating currentsOct/Nov 2021Paper 4 Q58 Marks
An audio signal of amplitude 2.0 µV and frequency 4.2kHz is to be transmitted using a carrier wave of amplitude 10.0mV and frequency 100kHz. Either amplitude modulation or frequency modulation may be used. The amplitude modulation is at a rate of 1 mV µV⁻¹. The frequency modulation is at a rate of 5 kHz µV⁻¹. Complete Table 5.1 to show the maximum and minimum values of the amplitude and of the frequency of the modulated wave for each type of modulation. Table 5.1 amplitude/mV frequency/kHz minimum maximum minimum maximum amplitude modulation frequency modulation
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