WAEC Physics 2025 Theory — Question 24

Model answer

(i) Magnetic lines of force point away from the North pole and towards the South pole outside the magnet; they are closer together where the field is stronger; they never intersect one another; they form closed loops. (ii) A solenoid is a long wire wound in the shape of a helix (spiral), usually around a cylindrical core, used to produce a uniform magnetic field when current flows through it.