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Magnetism and magnetic effects of electric current

Level: Class 12, TN State Board, Physics

  1. Earth’s magnetic field and magnetic moments
  2. Basic properites of magnets
  3. Coulomb’s inverse square law of magnetism
    • Definition and explanation about magnetic force (flux)
    • Magnetic field (flux density) and its characteristics
    • Magnetic field at a point along the axial line of the magnetic dipole (bar magnet)
    • Magnetic field at point along the equatorial line due to a magnetic dipole (bar magnet)
  4. Torque acting on a bar magnet in uniform magentic field
    • Potential energy of a bar magnet in uniform magnetic fieldTangent law and tangent galvanometer
  5. Magnetic properties
  6. Classification of magnetic materials
  7. Hysteresis
  8. Magnetic effects of current
    • Oersted experiment
    • Magnetic field around a straight current carrying conductor and circular loop
    • Right hand thumb rule
    • Maxwell’s right hand cork screw rule
  9. Biot – Savart law
    • Definition and explanation
    • Magnetic field due to long straight conductor carrying current
    • Magnetic field produced along the axis of the current carrying circular coil
    • Magnetic dipole moment of revolving electron
  10. Ampere’s circuital law
    • Definition and explanation
    • Magnetic field due to current carrying wire of infinite length using Ampere’s circuital law
    • Magnetic field due to a long current carrying solenoid
  11. Lorentz force
    • Force on a moving charge in a magnetic field
    • Motion of a charged particle in a uniform magnetic field
    • Motion of a charged particle under crossed electric and magnetic field (velocity selector)
    • Cyclotron
    • Force on a current carrying conductor placed in a magnetic field
    • Force between long parallel current carrying conductor
  12. Torque on a current loop
    • Expression for torque on a current loop placed in a magnetic field
    • Moving coil galvanmeter

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