A transformer supplies a spotlight in a school theatre. It has 800 turns on its primary coil and 200 turns on its secondary coil. The primary coil is connected to a 230 V alternating supply and carries a current of 0.50 A. The transformer is 100% efficient.
Calculate the current in the secondary coil.
108 exam-style questions on Edexcel GCSE Physics 13.2 Transformers and the National Grid, covering 13.2.1 Transformers and induction, 13.2.2 The transformer turns-ratio equation, 13.2.3 The National Grid, 13.2.4 The transformer power equation, and 13.2.5 Advantages of high-voltage transmission. Each one has a worked solution and a mark scheme showing where the marks go.