A magnet is pushed into a coil. The voltmeter shows a positive reading. The magnet is turned end for end and pushed into the same end of the coil at the same speed.
What happens to the reading?
Its sign reverses and its size stays the same.
Its sign reverses and its size becomes larger.
Its sign stays the same and its size becomes larger.
Its sign stays the same and its size stays the same.
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.