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Alternating current produced by the generator in a nuclear power plant is supplied to the primary coil of a transformer. Explain, with reference to Faraday's law of electromagnetic induction, how a current arises in the secondary coil.

A typical transformer consists of an iron core with two coils wound around it - the primary and the secondary. Any current-carrying wire produces a magnetic field around it, but because the primary coil carr...
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Answered by Jakub K. • Physics tutor
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In what situations do I use the subjunctive?

The use of the subjunctive can be quite daunting in Spanish, as there is no real equivalent in English. In general, it is used in situations of possibility or uncertainty, and is always directly preceeded by...
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Answered by Owen A. • Spanish tutor
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Why do Christians use the symbol of the cross so much?

Many Christians view the cross as a very significant symbol in their faith. When Jesus was on the earth, he was killed by Roman soldiers after Jewish leaders demand he be punished for claiming that he could ...
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What do Christians believe about God?

Christians believe that there is one God , who is in three persons - Father , Son and Holy Spirit . God the Father created the world and judges . God the Son is Jesus Christ who came as a human to earth as a...
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What can I do to get higher marks in my exam?

When examiners mark your paper, they look for three main things: knowledge about the subject, understanding of this knowledge and how it applies, and quality of your argument.Firstly, you must know your subj...
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