Non-ohmic materials

Non-ohmic materials are substances whose electrical resistance changes when the voltage applied to them changes. Unlike ohmic materials (like copper wires), where current and voltage have a straight-line relationship, non-ohmic materials do not follow this linear behavior. Instead, their current may increase or decrease unpredictably as voltage varies, depending on their internal properties or structure. Examples include semiconductors and diodes, which are crucial in electronic devices. Understanding non-ohmic materials helps in designing circuits that control electrical flow in specific ways, enabling modern electronics to function efficiently.