JEE Main 2022 Physics question
The frequencies at which the current amplitude in an LCR series circuit becomes times its maximum value, are 212 rad and 232 rad . The value of resistance in the circuit is R = 5 . The self-inductance in the circuit is mH.
Answer: 250
Solution
The current amplitude is of its maximum when the impedance is , i.e. when . At rad/s (below resonance) , and at rad/s (above resonance) . Adding the
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