A magnet moves into a coil at constant speed. In a second trial the magnet is reversed and the direction of motion is also reversed. Its speed and the coil connections are unchanged.
How does the induced potential difference in the second trial compare at the same relative position?
The opposite polarity and the same magnitude.
The same polarity and a greater magnitude.
The same polarity and the same magnitude.
The opposite polarity and a greater magnitude.
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.