Which of these factors affects the strength of the magnetic field inside a current-carrying solenoid?
Size of the current only
Number of turns of wire on the solenoid only
Both the size of the current and the number of turns of wire on the solenoid
Direction of the current only
17 exam-style questions on OCR GCSE Physics Magnets and magnetic fields. Each one has a worked solution and a mark scheme showing where the marks go.