The motor effect
The force on a current in a magnetic field, Fleming's left-hand rule, F = BIl with the tesla, and why the coil of a motor keeps turning.
You will be able to
- Find the direction of the force with Fleming's left-hand rule
- Calculate the force with F = BIl, changing mT, mA and cm first (Higher)
- Explain how a d.c. motor turns and what makes it faster
25 minutes, 9 exam-style questions.