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Power in AC Circuits for NEET: 13 solved questions

Real NEET paper questions on power in ac circuits, part of alternating current. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 1995 to 2023. No sign-in needed to read them.

What this topic asks

• Power factor — 6 questions
• Average power and heating — 6 questions
• Wattless current — 1 question

All 13 questions with solutions

• The maximum power is dissipated for an ac in a/an: NEET 2023
• A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase diff… NEET 2020
• An inductor of 20 mH, a capacitor of 100 μF and a resistor of 50 Ω are connected in series across a source of… NEET 2018
• An inductor of 20 mH, a capacitor of 50 μF and a resistor of 40 Ω are connected in series across a source of… NEET 2016 Phase-1
• The potential differences across the resistance, capacitance and inductance are 80 V, 40 V and 100 V respecti… NEET 2016 Phase-II
• A resistance R draws power P when connected to an ac source. If an inductance is now placed in series with th… NEET 2015
• In an electrical circuit, R, L, C and an ac voltage source are all connected in series. When L is removed fro… NEET 2013
• The instantaneous values of alternating current and voltage in a circuit are given as i=1/(√2)sin (100π t) am… NEET 2012 Mains
• The power dissipated in an LCR series circuit connected to an ac source of emf ε is NEET 2009
• In an ac circuit, the emf (ε) and the current (i) at any instant are given respectively by ε=E₀ sin ω t and i… NEET 2008
• A coil of inductive reactance 31 Ω has a resistance of 8 Ω. It is placed in series with a condenser of capaci… NEET 2006
• In an ac circuit, the current flowing is I=5 sin (100t-π/2) ampere and the potential difference is V=200 sin(… NEET 1995
• In an ac circuit carrying a current I under a voltage V, the power dissipation is NEET 1997