Why don’t we use wood as the core for transformers?

    

      In an electrical power transformer, there are primary, secondary, and maybe tertiary windings. The performance of a transformer mainly depends upon the flux linkages between these windings. For efficient flux linking between these windings, one low reluctance magnetic path common to all windings should be provided in the transformer. This low reluctance magnetic path in a transformer is known as the core of the transformer.

    The main purpose of using a core in a transformer is to carry the flux. Generally, magnetic materials are used in transformer core because it has a tendency to carry the flux. If we use the wooden piece in place of magnetic materials, then Transformer will not work at all because the wooden core cannot provide a path to the flux so flux will not link either in the secondary side or the primary side. In short, Transformer will not work.

    The purpose of the core in an electric transformer is to provide a magnetic path. wood is poor magnetic material compared to the iron core.