How does a transformer work?

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GCSE P3

could you please explain in steps  how a transformer works?

Posted Sat 12th May, 2012 @ 14:38 by anonymous

4 Answers

  • 3 votes

Right so this usually comes as a four mark question, in order :

- the alternating current supplied to the coil creates and alternating magnetic field (1)

- the primary coil is unmoving and so cut the field (1) , inducing a voltage (1)

- this voltage is passed on to the secondary coil, which is part of a circuit and so a current is created in the secondary coil (1)

hope it helped :)

Answered Sat 12th May, 2012 @ 15:45 by Lamise Hassan
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Lamise Hassan..........THANKS!whilst everyone on here is too busy revising to answer questions you took the time to answer mine (well)

SO thank you!

Answered Sat 12th May, 2012 @ 15:50 by anonymous
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haha i love physics!

Answered Sat 12th May, 2012 @ 15:51 by Lamise Hassan
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Just to add to Lamise Hassan's Brilliant answer:

Once a current is induced in the secondary coil, electricity is supplied at high voltages and low currents in a step up transformer towards our homes to reduce the risks of electric energy loss and short circuits. Once electricity reaches near our homes, the high voltages are converted into low voltages at high currents through the step down transformer which supplies us with electrical energy.

Answered Wed 16th May, 2012 @ 19:16 by Taha