The BH Curve represents the relationship between the magnetic field strength (H) and magnetic flux density (B) in a magnetic material, showing how the material reacts to varying magnetic fields.

The hysteresis loop shows the energy loss due to magnetization and demagnetization cycles in a material. It helps engineers choose materials with low energy loss for applications like transformers and inductors.

Coercivity is the value of the magnetic field required to reduce the magnetization of a material to zero after it has been magnetized. It is an important parameter for understanding a material’s magnetic strength.

In transformers, the BH Curve helps select core materials with low hysteresis losses and suitable saturation points, improving the transformer’s efficiency and reducing heat losses.

The primary disadvantage is the energy loss due to the hysteresis effect, which represents wasted energy in magnetic cycles. Additionally, it can be complex to analyse non-linear materials or materials that are sensitive to temperature changes.