This deep dive covers Magnetic Fields and Field Lines within Magnetic Fields for GCSE Physics. Revise Magnetic Fields in Magnetism for GCSE Physics with 13 exam-style questions and 12 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 2 of 14 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 2 of 14
Practice
13 questions
Recall
12 flashcards
🔬 Magnetic Fields and Field Lines
A magnetic field is a region in which a magnetic material experiences a force. We represent this using field lines — imaginary lines that show the direction and strength of the field.
- Field lines go from NORTH to SOUTH pole (outside the magnet)
- Arrows show the direction a free north pole would move
- Closely spaced lines = stronger magnetic field
- Lines never cross each other
- The field is strongest at the poles (lines are closest together)
Direction of the field: A compass needle always aligns with field lines — the north end points in the direction of the field (from N to S outside the magnet).