AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
A magnetic field is the region surrounding a magnet (or current-carrying conductor) where its magnetic force can be detected. Its SI unit is Tesla (T).
The question has two parts — definition and SI unit — both must be stated for full credit. The definition comes directly from the chapter. Note: "Oersted" is a CGS unit; the SI unit examiners expect is Tesla (T).