Flashcards
Transformers
Cards in this deck (10)
- 1Step up transformerPotential difference across secondary coil is greater than potential difference across primary
- 2Switch mode transformer frequenceyHigh frequencey
50kHz - 200kHz - 3Step-down transformerPotential difference across primary cil greater than potential difference across secondary coil
- 4Switch modeLight and small
Suitable for mobile phone charges
Do not use energy when turned on but no load is applied - 5Finding the potenital differenceVp np
---- = ------
Vs ns - 6Finding the electrical input/output of a transformerVp x Ip = Vs x Is
- 7Alternating currentIn primary coil produces a changing magnetic field in the iron core and secondary coil
- 8Alternating magnetic field in secondary coilInduces an alternating potenital idfference across the ends of the secondary coil
- 9Potential difference across the ends of a conductorInduced when an electrical conductor cuts through a magnetic field
- 10Potential diffeence across the ends of the coilInduced if a magnet is moved into a coil of wire
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- GCSE Triple Science (Physics) Flashcards on Transformers, created by bryonycribbb on 04/05/2015.
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- bryonycribbb
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