A student suggests supplying homes directly from the high-voltage transmission cables to avoid using local transformers.
Which statement explains why local transformers are still needed?
The potential difference must be increased to a level suitable for domestic use.
The energy transferred each second must be reduced to zero for domestic use.
The potential difference must be reduced to a level suitable for domestic use.
The energy transferred each second must be increased without input for domestic use.
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.