Electromagnetic Induction questions with solutions

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• NumericmediumElectromagnetic InductionSelf-Inductance, Induced EMF and Transient Analysis of L-R Circuits

  Inductance of a coil with 10⁴ turns is 10 mH and it is connected to a dc source of 10 V with internal resistance of 10 Ω. The energy density in the inductor when the current reaches (1/e) of its maximum value is απ × (1/e²) J/m³. The value of α is ___.

  (μ₀ = 4π × 10⁻⁷ Tm/A)

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  JEE Mains 202622 January Morning Shift

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• MCQeasyElectromagnetic InductionMagnetic Flux,Faraday's Laws of Electromagnetic Induction and Lenz's Law

  In the circuit shown, an inductor L is in series with bulb B, battery and switch K. When will bulb B suddenly become bright? [Image]

  Options

  • Option A

    When the contact is made or broken

  • Option B

    When the contact is made

  • Option C

    When the contact is broken

  • Option D

    The bulb will not become bright

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  AIPMT 1989NEET Previous Year

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• MCQeasyElectromagnetic InductionMagnetic Flux,Faraday's Laws of Electromagnetic Induction and Lenz's Law

  A square loop of side 15 cm being moved towards right at a constant speed of 2 cm/s as shown in figure. The front edge enters the 50 cm wide magnetic field at t = 0. The value of induced emf in the loop at t = 10 s will be :

  

  Options

  • Option A

    0.3 mV

  • Option B

    4.5 mV

  • Option C

    zero

  • Option D

    3 mV

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  JEE Mains 2024 09 Apr Evening Shift

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• IntegermediumElectromagnetic InductionMotional EMF in Translating and Rotating Conductors

  A 20 cm metallic rod rotates at 210 rpm about an axis through one end, normal to the rod. A uniform magnetic field B = 0.2 T is parallel to the axis. Find the emf between the centre and the outer ring, in mV. Take π = 22/7.

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  15 April 2023 Morning Shift

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• Multi-correctmediumElectromagnetic InductionMagnetic Flux,Faraday's Laws of Electromagnetic Induction and Lenz's Law

  A rectangular conducting loop moves rigidly with constant velocity while remaining completely inside a uniform magnetic field perpendicular to its plane. Which statements are correct?

  Select all that apply

  • Option A

    Flux through the loop remains constant.

  • Option B

    Net EMF around the complete loop is zero.

  • Option C

    Individual moving segments can have motional EMF.

  • Option D

    A continuous current must flow.

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  JEE MainsNEET

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• Multi-correctmediumElectromagnetic InductionMutual Inductance, L-C Oscillations and Transformers

  At an instant when the capacitor of an ideal LC oscillator is completely discharged, which statements are correct?

  Select all that apply

  • Option A

    Current magnitude is maximum.

  • Option B

    Electric energy is zero.

  • Option C

    Magnetic energy equals total energy.

  • Option D

    The magnitude of dI/dt is maximum.

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• NumericmediumElectromagnetic InductionMagnetic Flux,Faraday's Laws of Electromagnetic Induction and Lenz's Law

  A 50-turn coil of resistance 5 Ω is taken from a region where the flux through each turn is 4 mWb to a region where it is 1 mWb. Determine the magnitude of charge transferred, in mC.

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• MCQmediumElectromagnetic InductionSelf-Inductance, Induced EMF and Transient Analysis of L-R Circuits

  Two coils have L₁=16 mH and L₂=25 mH. If k=0.60, determine M.

  Options

  • Option A

    6 mH

  • Option B

    12 mH

  • Option C

    20 mH

  • Option D

    24 mH

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  JEE MainsNEET

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• MCQeasyElectromagnetic InductionMutual Inductance, L-C Oscillations and Transformers

  Which listed device does NOT use eddy-current effects?

  Options

  • Option A

    Magnetic braking in trains

  • Option B

    Electromagnet

  • Option C

    Electric heater

  • Option D

    Induction furnace

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  NEET 2019NEET Previous Year

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• NumericmediumElectromagnetic Induction

  A conducting rod PQ of length 5 m moves with velocity 2î m/s without rotation in a uniform magnetic field (3ĵ+4k̂) T, as shown. Find the induced emf.

  

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  JEE Advanced

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