CAIE IGCSE Physics 4.5.3.4 Qualitative Variation of the Strength Questions
Learn how magnetic field strength varies with distance and position around current-carrying conductors.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Learn how magnetic field strength varies with distance and position around current-carrying conductors.
Fig. 10.1 shows a wire that carries a current into the page. The circles on Fig. 10.1 show the pattern of the magnetic field around the wire.
Fig. 10.1
State why the spacing of the circles increases as the distance from the wire increases.
(magnetic) field becomes weaker / decreases (as distance from wire increases)