A horizontal wire carries a current to the right in a magnetic field acting vertically downwards. The wire experiences a force acting out of the page.
The direction of the magnetic field is now reversed, while the current direction remains unchanged.
In which direction does the force on the wire now act?
into the page
out of the page
upwards
downwards
19 exam-style questions on CIE IGCSE Physics 4.5.4a Force on a current-carrying conductor. Each one has a worked solution and a mark scheme showing where the marks go.