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Formula Sheet

Magnetism and Magnetic Effect of Electric Current — Formula Sheet

NIOS · Class 12 · Physics

14 formulas from Magnetism and Magnetic Effect of Electric Current (NIOS Class 12 Physics) on one page, grouped by topic. Includes Mathematically.

45 questions33 flashcards14 formulas & key relations5 concepts

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Illustrates Oersted's experiment showing iron filings arranging in concentric circles around a straight current-carrying wire, demonstrating the magnetic field produced by current.
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14 Entries · 5 Sections

Formulas and Key Relations

Magnets and Earth's Magnetic Field

B_H = B cos δ

B_V = B sin δ

B² = B_H² + B_V²

tan δ = B_V / B_H

Biot-Savart's Law and Applications

|dB| = (μ₀/4π) × (I dℓ sin θ) / r²

B = μ₀I / 2r

B = μ₀nI / 2r

Ampere's Circuital Law and Applications

∮ B · dl = μ₀I

Force on Moving Charge and Current-Carrying Conductor

F = qvB sin θ

F = BIℓ sin θ

F/ℓ = μ₀I₁I₂ / 2πr

R = mv / qB

T = 2πm / Bq

Ampere's Circuital Law and Its Applications

Mathematically

∮ B·dl = μ₀I. This is independent of the shape or size of the closed loop chosen.

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Frequently Asked Questions

What are the important topics in Magnetism and Magnetic Effect of Electric Current for NIOS Class 12 Physics?
Key topics in Magnetism and Magnetic Effect of Electric Current include Magnets, Their Properties, and Magnetic Field Lines, Earth's Magnetic Field and Its Elements, Oersted's Experiment and Biot-Savart's Law, Ampere's Circuital Law and Its Applications. Study these first, then practise questions on each for the NIOS Class 12 board exam.
How many formulas are in Magnetism and Magnetic Effect of Electric Current?
This sheet lists 14 formulas from Magnetism and Magnetic Effect of Electric Current, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Magnetism and Magnetic Effect of Electric Current for the NIOS Class 12 board exam?
Learn the core ideas first, then work through the 45 practice questions on Magnetism and Magnetic Effect of Electric Current. 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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