Four arrangements use an identical rectangular coil, a sensitive ammeter and the same electromagnet. The magnetic field between the poles is uniform and steady. In each arrangement, the plane of the coil is perpendicular to the magnetic field.
Which arrangement produces an induced current?
The coil is connected through the sensitive ammeter to form a complete circuit and is held stationary between the poles of the electromagnet.
The coil is connected through the sensitive ammeter to form a complete circuit and is moved along the direction of the field lines while staying between the poles.
One end of the coil is disconnected from the sensitive ammeter and the coil is pulled sideways until it is completely outside the magnetic field.
The coil is connected through the sensitive ammeter to form a complete circuit and is pulled sideways until it is completely outside the magnetic field.
92 exam-style questions on Edexcel GCSE Physics 13.1 Inducing a current, covering 13.1.1 Producing an electric current by induction, 13.1.2 Factors affecting the induced potential difference, 13.1.3 Alternators and dynamos, and 13.1.4 Microphones and loudspeakers. Each one has a worked solution and a mark scheme showing where the marks go.