A high-precision calibration sensor contains a thin, suspended titanium filament oriented at right angles to a constant, uniform magnetic field.
When a high-frequency alternating current (AC) is passed through the titanium filament, the filament undergoes rapid physical vibration.
Explain why the magnetic force experienced by the titanium filament varies continuously in both magnitude and direction.
10 exam-style questions on Edexcel GCSE Physics 12.3 The motor effect. Each one has a worked solution and a mark scheme showing where the marks go.