Electromagnetic Induction questions with solutions

Showing 1–10 of 303 questions

• MatcheasyElectromagnetic InductionMutual induction and L-C oscillations,transformer

  Match List I with List II.

  List 1

  1. A. AC generator

  2. B. Transformer

  3. C. Resonance phenomenon to occur

  4. D. Sharpness of resonance

  List 2

  1. I. Presence of both L and C

  2. II. Electromagnetic Induction

  3. III. Quality factor

  4. IV. Mutual Inductance

  Options

  • Option A

    A-IV, B-II, C-I, D-III

  • Option B

    A-II, B-I, C-III, D-IV

  • Option C

    A-II, B-IV, C-I, D-III

  • Option D

    A-IV, B-III, C-I, D-II

  Check answerShow answer

  JEE Mains1 February 2023Shift 1Morning Shift

  Open question & full solution →
• MCQmediumElectromagnetic Induction

  Find the ratio of time constant in build up and decay in the circuit as shown in figure :-

  

  Options

  • Option A

    1 : 1

  • Option B

    3 : 2

  • Option C

    2 : 3

  • Option D

    1 : 3

  Check answerShow answer

  JEE MainsNEET

  Open question & full solution →
• MCQmediumElectromagnetic Induction

  Two coils A and B have coefficient of mutual inductance M = 2H. The magnetic flux passing through coil A changes by 4 Weber in 10 seconds due to the change in current in B. Then

  Options

  • Option A

    the change in current in B in this time interval is 0.5 A

  • Option B

    the change in current in B in this time interval is 2A

  • Option C

    the change in current in B in this time interval is 8A

  • Option D

    a change in current of 1A in coil A will produce a change in flux passing through B by 4 Weber.

  Check answerShow answer

  JEE MainsNEET

  Open question & full solution →
• NumericeasyElectromagnetic Inductionself induction and L-R circuit

  The current in an inductor is given by I = (3t + 8) where t is in second. The magnitude of induced emf produced in the inductor is 12 mV. The self-inductance of the inductor _______ mH.

  Your answer

  Check answerShow answer

  JEE Mains 2024 05 Apr Evening Shift

  Open question & full solution →
• IntegereasyElectromagnetic Inductionself induction and L-R circuit

  A coil has inductance 2 H and resistance 4 Ω. A 10 V DC source is applied. After current reaches steady state, the magnetic energy is ______ × 10⁻² J.

  Your answer

  Check answerShow answer

  JEE Mains11 April 2023Shift 2Evening Shift

  Open question & full solution →
• NumericmediumElectromagnetic Induction

  Two conducting rods form a rectangular loop of sides a=30 cm and b=50 cm in uniform B=5×10⁻³ T perpendicular to the plane. The loop is turned symmetrically through 180°. If R=1 Ω and L=1 H, find Δq/150 in µC.

  

  Your answer

  Check answerShow answer

  JEE Advanced

  Open question & full solution →
• MCQmediumElectromagnetic Inductionelectric field due to changing magnetic field

  A flexible circular loop has radius r(t)=r₀(1+αt) and lies in a uniform perpendicular field B(t)=B₀(1+βt). What is the magnitude of induced EMF at t=0?

  Options

  • Option A

    πB₀r₀²|β+2α|

  • Option B

    πB₀r₀²|β+α|

  • Option C

    2πB₀r₀²|β+2α|

  • Option D

    πB₀r₀|β+2α|

  Check answerShow answer

  JEE MainsNEET

  Open question & full solution →
• IntegereasyElectromagnetic Inductionmotional emf and induced emf in rotating rod

  A metallic cube of side 15 cm moves along +y at 2 m s⁻¹ in a uniform magnetic field 0.5 T along +z. The equilibrium potential difference between the higher- and lower-potential faces is ______ mV.

  

  Your answer

  Check answerShow answer

  JEE Mains11 April 2023Shift 2Evening Shift

  Open question & full solution →
• MatchmediumElectromagnetic Inductionfaradays law and question based on it

  List-I contains four conducting loops lying in the XY plane, as shown in the figures. The loops are rotating about Z axis passing through the point O with time period T in clockwise direction. The region x > 0 contains a uniform magnetic field B in the +z direction. List-II contains the qualitative variation of the induced current i(t) for each of these loops. Choose the option which describes the correct match between the entries in List-I to those in List-II. Image

  List 1

  1. 

  2. 

  3. 

  4. 

  5. .

  List 2

  1. 

  2. 

  3. 

  4. 

  5. 

  Options

  • Option A

    P→5, Q→4, R→1, S→3

  • Option B

    P→3, Q→2, R→5, S→4

  • Option C

    P→3, Q→2, R→1, S→4

  • Option D

    P→5, Q→1, R→2, S→3

  Check answerShow answer

  JEE Advanced2026Paper 1

  Open question & full solution →
• MCQmediumElectromagnetic Induction

  A conducting loop of radius R is in a uniform magnetic field B perpendicular to the plane of the loop. Its radius varies as R=R₀+t. The induced emf is:

  

  Options

  • Option A

    2π(R₀+t)B clockwise

  • Option B

    π(R₀+t)B clockwise

  • Option C

    2π(R₀+t)B anticlockwise

  • Option D

    0

  Check answerShow answer

  JEE MainsNEET

  Open question & full solution →