MHT CET 2026 Physics question
A resistor of 100 , inductor of self inductance H and a capacitor of unknown capacity are connected in series to an a.c. source of 200 V and 50 Hz. When the current and voltage are in phase, the value of capacity is
Answer: (D)
Solution
When current and voltage are in phase in a series LCR circuit the circuit is at resonance, so , i.e. or . Here rad/s, so . Then and
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