Electromagnetic instruments are devices that utilize electromagnetic principles to measure, detect, or manipulate various physical phenomena. Common examples include oscilloscopes, which visualize electrical signals, and multimeters, which measure voltage, current, and resistance. These instruments are essential in fields like electronics, telecommunications, and physics. These tools operate based on the interaction of electric and magnetic fields. For instance, sensors in electromagnetic instruments can detect changes in magnetic fields, allowing for applications in medical imaging and industrial automation. Overall, they play a crucial role in modern technology and scientific research.