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Moving Charges and Magnetism — Syllabus

Telangana Open School (TOSS) · Class 12 · Physics

What Moving Charges and Magnetism covers in Telangana Open School (TOSS) Class 12 Physics: 4 topics, for the 2026-27 session.

47 questions25 flashcards10 formulas & key relations5 concepts

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4 Topics · Telangana Open School (TOSS) Class 12 Physics · 2026-27

Topics in Moving Charges and Magnetism

1

Magnetic Field Due to Current

  • A current-carrying conductor produces a magnetic field around it, as discovered by Oersted.
  • The direction of the magnetic field is determined using the Right-Hand Grip Rule: if the thumb points in the direction of current, the curled fingers show the direction of the magnetic field.
  • Magnetic field lines form concentric circles around a straight current-carrying wire.
2

Biot-Savart’s Law and Applications

  • Biot-Savart’s Law gives the magnetic field produced by a small current element.
  • The magnetic field is proportional to current, length of element, and sinθ, and inversely proportional to r².
  • Used to calculate magnetic field at the center of a circular loop.
3

Ampere’s Circuital Law

  • Ampere’s Law states that the line integral of B around a closed loop is μ₀ times the enclosed current.
  • It is useful for calculating magnetic fields in symmetric situations like long wires, solenoids, and toroids.
  • The law is analogous to Gauss’s law in electrostatics but for magnetism.
4

Force on Moving Charges and Current-Carrying Conductors

  • A moving charge in a magnetic field experiences a force called Lorentz force.
  • The force is perpendicular to both velocity and magnetic field, so it changes direction but not speed.
  • Fleming’s Left-Hand Rule gives the direction of force on positive charges.

Key Concepts

Central concept: Magnetic Effects of Electric Current

Oersted's ExperimentBiot-Savart's LawAmpere’s Circuital LawForce on Moving ChargeForce on Current-Carrying ConductorForce Between Parallel WiresMotion of Charged Particle in Magnetic FieldCurrent Loop as Magnetic Dipole

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Frequently Asked Questions

What are the important topics in Moving Charges and Magnetism for Telangana Open School (TOSS) Class 12 Physics?
Key topics in Moving Charges and Magnetism include Magnetic Field Due to Current, Biot-Savart’s Law and Applications, Ampere’s Circuital Law, Force on Moving Charges and Current-Carrying Conductors. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise Moving Charges and Magnetism for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 47 practice questions on Moving Charges and Magnetism. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All Telangana Open School (TOSS) Class 12 Physics Syllabus

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