MHT CET 2025 Physics question
An a.c. e.m.f. of peak value = 230 V and frequency 50 Hz is connected to a circuit with R = 11.5 , L = 2.5 H and a capacitor all in series. The value of capacitance is 'C' for the current in the circuit to be maximum. The value of C and maximum current are respectively ( = 10)
Answer: (B)
Solution
The current in a series LCR circuit is maximum at resonance, where , i.e. . With rad/s: F F. At resonance , so
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