A current flows in a long straight wire.
Which statement describes the shape of the magnetic field around the wire?
Straight lines that run parallel to the wire
Straight lines that point away from the wire
Loops that go into one end of the wire and out of the other
Circles around the wire, with the wire at the centre
44 exam-style questions on OCR GCSE Physics 4.1 Magnets and magnetic fields, covering 4.1.1 Magnetic poles, attraction and repulsion, 4.1.2 Permanent and induced magnets, 4.1.3 The magnetic field of a magnet, 4.1.4 Compasses and the Earth's magnetic field, 4.1.5 The magnetic field around a current-carrying wire, 4.1.6 Field strength, current and distance, and 4.1.7 Solenoids and electromagnets. Each one has a worked solution and a mark scheme showing where the marks go.