PhysicsHardHigh School (11–12)Electricity & Magnetism › Alternating CurrentElectricity & Magnetism › Electromagnetic InductionBoard ExamA-LevelIB
Created by StemPy LabA voltage of frequency Hz rises from zero as . How long after does the voltage first reach ?
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← A capacitor draws 0.36 A from a source of fixed voltage at 30 Hz. The frequency is raised to 75 Hz. What current does it draw now?A series LCR circuit carries the same current when the frequency of the source is 40 Hz and when it is 90 Hz. The voltage of the source has the same amplitude. What is the resonant frequency of the circuit? →
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