Part of MAG-02 — Electromagnetic Induction & Alternating Current

Previous Year Question Analysis

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NEET PYQ Pattern Analysis (2018–2024)

YearTopic TestedTypeKey Concept
NEET 2018Motional EMFNumericalε = Bvl, force on rod F = BIl
NEET 2019Lenz's lawConceptualDirection of induced current
NEET 2019Pure inductor powerConceptualWattless current, P = 0
NEET 2020LCR circuitNumericalZ, φ, power factor
NEET 2021Resonance propertiesConceptualZ = R at resonance (not zero)
NEET 2022Motional EMF, coilNumericalFaraday's law numerical
NEET 2023LCR propertiesConceptualPhase angle, power factor
NEET 2024TransformerNumericalTurns ratio, current ratio, efficiency

High-Frequency Concepts (appear almost every year)

  1. Resonance condition (Z = R, XLX_L = XCX_C) — tested conceptually every 2 years
  2. Motional EMF (ε = Bvl) — numerical almost every year
  3. Transformer turnscurrentratio\frac{turns}{current ratio} — numerical every 1–2 years
  4. Wattless current — conceptual every 2–3 years

Strategy

  • For Lenz's law questions: draw the flux direction, then determine the direction of induced current by opposing it.
  • For LCR questions: first compute XLX_L and XCX_C separately, then net reactance, then Z.
  • For transformers: voltage ratio = turns ratio; current ratio = INVERSE of turns ratio.

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