Alternating Current

JEE Main Physics · 5 questions

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• A LCR series circuit driven with E_r m s=90 V at frequency f_d=30 Hz has resistance R=80 Ω, an inductance with inductive…20266 April, Shift 1 · Q45
• A series LCR circuit with R=20 Ω, L=1.6 H and C=40 μ F is connected to a variable frequency a.c. source. The inductive reactance…20265 April, Shift 2 · Q48
• An a.c. source of angular frequency ω is connected across a resistor R and a capacitor C in series. The current is observed as I.…20265 April, Shift 1 · Q44
• An inductor of 10 mH, capacitor of 0.1 μ F and a resistor of 100 Ω are connected in series across an a.c power supply 220 V, 70…20264 April, Shift 1 · Q50
• The figure given below shows an L C R series circuit with two switches S_1 and S_2. When switch S_1 is closed keeping S_2 open,…20262 April, Shift 2 · Q42