# Magnetic field strength in hysteresis?

• Physicist3

#### Physicist3

Hi, I have been reading about magnetic hysteresis and all sources refer to magnetic field strength (H) as having the units (A/m). Why is it just amps/meter and not ampere-turns/metre as H = NI/L and not N/L? Is there another equation for H that I am unaware of?

Cheers.

two turns mean twice the H for a given current. N itself is dimensionless, determined by the configuration..

## What is hysteresis in terms of magnetic field strength?

Hysteresis refers to the phenomenon where the magnetic field strength of a material does not immediately respond to changes in the applied magnetic field. It takes some time for the magnetic field strength to increase or decrease, even after the applied field has been changed. This can be observed in materials such as ferromagnetic substances.

## How is magnetic field strength measured in hysteresis?

Magnetic field strength in hysteresis is typically measured using a magnetometer. This device measures the strength and direction of a magnetic field. In hysteresis, the magnetometer is used to track changes in the magnetic field strength of a material as the applied field is varied.

## What is the relationship between magnetic field strength and hysteresis loop?

The hysteresis loop is a graphical representation of the relationship between magnetic field strength and the magnetic properties of a material. It shows how the magnetic field strength of a material changes as the applied field is varied. The shape and size of the hysteresis loop can provide information about the magnetic properties of the material.

## How does temperature affect magnetic field strength in hysteresis?

Temperature can have a significant impact on the magnetic field strength in hysteresis. In general, an increase in temperature can decrease the magnetic field strength of a material, making it easier to magnetize and demagnetize. However, this relationship can vary depending on the type of material and its composition.

## What are some practical applications of understanding magnetic field strength in hysteresis?

Understanding the relationship between magnetic field strength and hysteresis has many practical applications. It is essential in the design and development of various electronic devices, such as computer hard drives, motors, and generators. It is also crucial in industries like aerospace, where strong and reliable magnetic fields are necessary for precise control and navigation systems.