A conducting metal rod is placed on two parallel, horizontal rails. A uniform magnetic field is directed vertically through the region containing the rails and the rod.
When the circuit is closed, the rod accelerates uniformly from rest for 0.25 s0.25\text{ s}0.25 s before leaving the magnetic field.
You are given the following data:
Calculate the maximum possible velocity of the rod as it leaves the magnetic field.
13 exam-style questions on AQA GCSE Physics 7.2 The motor effect, covering 7.2.1 Electromagnetism, 7.2.2 Fleming's left-hand rule (HT only), 7.2.3 Electric motors (HT only), and 7.2.4 Loudspeakers (HT only). Each one has a worked solution and a mark scheme showing where the marks go.