CAIE A-Level Physics 20.1.2 Magnetic Field Lines
Practise drawing magnetic field lines with correct direction and geometry, then comparing field strength from line spacing and direction.
- Syllabus
- 2028–2030
- Course
- Physics 9702
- Level
- A2
Exam points
- represent magnetic fields using field lines with correct direction and geometry
- interpret field-line spacing or direction to compare magnetic-field strength
20.1.2—A magnetic field by field lines question 1
A particle of charge +q and mass m is travelling in a vacuum with speed v. The particle enters, at a right angle, a uniform magnetic field of flux density B, as shown in Fig. 8.1.
Fig. 8.1
The particle leaves the field after following a semi-circular path of diameter d.
State the direction of the magnetic field.
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