ampere's law and its application questions with solutions

Showing 1–8 of 8 questions

• MCQmediumMagnetic effect of currentampere's law and its application

  An infinite solid cylindrical wire of radius R carries current I uniformly over its cross-section. At what distance from the centre is the magnetic field equal to μ₀I/(4πR)?

  

  Options

  • Option A

    R/2

  • Option B

    R

  • Option C

    4R

  • Option D

    0

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  JEE Mains 2025 29 Jan Morning Shift

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• MCQmediumMagnetic effect of currentampere's law and its application

  Given below are two statements:

  Statement (I): When currents vary with time, Newton's third law is valid only if momentum carried by the electromagnetic field is taken into account.

  Statement (II): Ampere's circuital law does not depend on Biot-Savart's law.

  In the light of the above statements, choose the correct answer from the options given below:

  Options

  • Option A

    Both Statement I and Statement II are false.

  • Option B

    Statement I is true but Statement II is false.

  • Option C

    Statement I is false but Statement II is true.

  • Option D

    Both Statement I and Statement II are true.

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  JEE Mains 2024 09 Apr Morning Shift

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• MCQeasyMagnetic effect of currentampere's law and its application

  The space inside a current-carrying toroid is filled with material of magnetic susceptibility χ = 2 × 10⁻². The percentage increase in magnetic field is:

  Options

  • Option A

    0.2%

  • Option B

    1%

  • Option C

    2%

  • Option D

    0.1%

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  JEE Mains11 April 2023Shift 1Morning Shift

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• MCQeasyMagnetic effect of currentampere's law and its application

  In a co-axial straight cable, the central conductor and the outer conductor carry equal currents in opposite directions. The magnetic field is zero:

  Options

  • Option A

    inside the outer conductor

  • Option B

    in between the two conductors

  • Option C

    outside the cable

  • Option D

    inside the inner conductor

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  JEE Mains 2024 05 Apr Morning Shift

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• MCQmediumMagnetic effect of currentampere's law and its application

  A solenoid contains a core of relative permeability μᵣ = 400. The magnetic field inside the solenoid is 1.0 T. If the magnetic field intensity is written as H = α×10⁵ A·m⁻¹ and μ₀ = 4π×10⁻⁷ T·m·A⁻¹, what is α?

  Options

  • Option A

    25 /π

  • Option B

    1 /(16π)

  • Option C

    1 /π

  • Option D

    1 /(4π)

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  JEE Mains 2026 4 April Evening Shift

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• NumericmediumMagnetic effect of currentampere's law and its application

  A solenoid of length 0.5 m has a radius of 1 cm and is made up of 'm' number of turns. It carries a current of 5A. If the magnitude of the magnetic field inside the solenoid is 6.28 × 10⁻³ T, then the value of m is :

  Your answer

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  JEE Mains 2024 05 Apr Evening Shift

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• MCQmediumMagnetic effect of currentampere's law and its application

  A solenoid of cross-sectional area A and length l is filled with a material of relative permeability 2. If the magnetic field inside the solenoid is B, the magnetic energy stored in the solenoid is:

  Options

  • Option A

    B²Al/(4μ₀)

  • Option B

    B²Al/μ₀

  • Option C

    B²Al/(2μ₀)

  • Option D

    B²Al

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  JEE Mains 2025 2 April Evening Shift

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• MCQmediumMagnetic effect of currentampere's law and its application

  A long solid cylindrical conductor carries current uniformly along its axis. Which graph correctly describes magnetic field B versus radial distance r?

  Options

  • Option A
    
  • Option B
    
  • Option C
    
  • Option D
    

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  JEE Mains 2025 24 Jan Evening Shift

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