Back emf is generated when a motor is running freely. The back emf is almost equal to the emf of the source making it spin. | Electricity and magnetism

Title

Back emf is generated when a motor is running freely. The back emf is almost equal to the emf of the source making it spin.

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Back emf is generated when a motor is running freely. The back emf is almost equal to the emf of the source making it spin.

Subject: 

  • Physical Sciences

Category: 

  • Electricity and magnetism
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Exam practice is essential. Make sure your student has access to practice exam papers for the subjects they take. Make sure the exam papers relate to the correct version of the curriculum.

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Studying should be active. Your child should be making notes, working through examples, doing practice exam papers and testing herself on the sections she is studying.

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Formulae sheets or key concept sheets are useful for quick revision. Get your teenager to stick them on the wall in their room. The more they look at the formulae and key concepts, the more likely...

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