Class 12 Physics simulations · Magnetism and Matter

Magnetic dipole: axis and equator

Move away from a small bar magnet and compare its axial and equatorial fields.

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What to notice

At equal distances, the axial field magnitude is twice the equatorial field.

Key relation

Baxis = 2μ₀m/(4πr³); Beq = μ₀m/(4πr³)

Try this

Double the distance and watch both fields fall by a factor of eight.

What you can change

• Magnetic moment: 0.5 to 10 A·m²
• Distance from centre: 0.2 to 2 m

More in Magnetism and Matter

• Paramagnetism and Curie’s law
• Earth’s magnetic field components
• Bar magnet and compass
• Oscillating magnet in Earth’s field
• How magnetic materials respond

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