The strength of fields refers to the intensity of a force field, such as an electric or magnetic field, at a specific point in space. This strength determines how strongly charged particles or magnetic materials will interact with the field. For example, in an electric field created by a charged object, the strength decreases with distance from the charge. In physics, the strength of a field is often measured in units like volts per meter for electric fields and teslas for magnetic fields. Understanding field strength is crucial in various applications, including electromagnetic devices, power generation, and communication technologies.