Magnetic permeability is a measure of how easily a material can become magnetized when exposed to a magnetic field. It indicates how well a material can conduct magnetic lines of force. Materials with high permeability, like iron, can be easily magnetized, while those with low permeability, like wood, resist magnetization. The permeability of a material is often represented by the symbol μ and is expressed in henries per meter (H/m). Understanding magnetic permeability is essential in designing electrical devices, such as transformers and inductors, where efficient magnetic field management is crucial for performance.