A student sets up an experiment to measure the magnetic force acting on a current-carrying conductor placed inside a magnetic field using a dynamic top-pan balance.
Describe how the student could develop this investigation to determine if the magnetic force on the conductor is directly proportional to the current flowing through it.
10 exam-style questions on Edexcel GCSE Physics 12.3 The motor effect, covering 12.3.1 The motor effect, 12.3.2 Fleming's left-hand rule, 12.3.3 Force on a conductor, and 12.3.4 Electric motors. Each one has a worked solution and a mark scheme showing where the marks go.