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| Ampere per Meter (A/m) | Oersted (Oe) |
|---|---|
| 1 | 0.01257 |
| 10 | 0.1257 |
| 50 | 0.6283 |
| 100 | 1.257 |
| 500 | 6.283 |
| 1,000 | 12.57 |
| 5,000 | 62.83 |
| 10,000 | 125.7 |
| 50,000 | 628.3 |
| 100,000 | 1257 |
The Ampere per Meter (A/m) is the SI unit of magnetic field strength, also known as magnetic field intensity or magnetizing force. It measures the strength of a magnetic field produced by electric current, independent of the material's magnetic properties. One A/m represents the field strength produced by one ampere of current flowing through a wire one meter long. This unit is fundamental in electromagnetics, used to calculate the magnetic field around conductors, in coil design, and in characterizing magnetic materials. The relationship between A/m and the older CGS unit Oersted is approximately 1 A/m = 0.01257 Oe.
Formula: Oersted = Ampere per Meter × (4π/1000) ≈ Ampere per Meter × 0.01257
Steps:
Example: Convert 100 A/m to Oersted
100 A/m × 0.01257 ≈ 1.257 Oe
1 Ampere per Meter equals approximately 0.01257 Oersted (exactly 4π/1000 Oe).
A/m measures magnetic field strength (H-field), while Tesla measures magnetic flux density (B-field). They're related by: B = μH, where μ is permeability.
Yes, A/m is the SI unit for magnetic field strength, while Oersted is the older CGS unit.
A/m is the standard SI unit, providing consistency with other electromagnetic calculations and international standards.
A/m determines the magnetizing force in a coil, calculated from current and coil geometry, essential for inductor and transformer design.
Magnetic field strength is created by electric current flowing through conductors, independent of the surrounding material.