Magnetic Field
A magnetic field is the region around a magnet or a current-carrying conductor where magnetic force can be felt.
Practice This ConceptMain explanation
Teacher explanation
A magnetic field tells us where a magnet can attract or repel another magnetic object. Around a bar magnet, the field is strongest near the poles. Around a current-carrying wire, the field is produced by the electric current itself. In exams, students should remember that the magnetic field is not a material object; it is the effect shown by force and field lines.
Example
If a compass needle is placed near a bar magnet, it turns because the needle experiences the magnet's field. Similarly, a current-carrying wire can deflect a compass near it.
Simple analogy
Magnetic field means magnet's reach, not the metal itself.
Common confusion
Many students think the magnetic field exists only inside the magnet. In fact, it extends into the surrounding space.
Exam tip
When a question asks about magnetic influence, mention both the source and the region around it where force acts.
Answer writing and exam use
1-mark use
Write the exact meaning of magnetic field in one clean line.
2-mark use
Define magnetic field and add one example or condition.
3-mark use
Explain magnetic field, show the method or example, and mention the common mistake.
Practice this concept with focused MCQs
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