MATHEMATICS · Subjective · ISC · Physics · Electromagnetic Induction and Alternating Currents · Oscillations and Waves
Problem
In a series LCR circuit, resonance occurs at a frequency of 50Hz. A student accidentally notes down the angular frequency as 400rads−1.
(i) Find the correct period of the resonant current.
(ii) Calculate the percentage error in the student’s recorded angular frequency.