MHT CET 2022 Physics question
A resistor 'R', an inductor 'L' and a capacitor 'C' are connected in series to an oscillator of frequency 'N'. If the resonant frequency is '' then the current lags behind voltage, when
Answer: (D)
Solution
In a series LCR circuit the phase angle satisfies with and . The current lags the voltage when the circuit is inductive, , which happens when the source frequency exceeds the resonant
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