Physics GCSE Magnetism and Electromagnetism question

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TacticalDebation
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The question is:

Figure 10 shows a portable power supply.

The portable power supply has an alternator connected to a transformer. The transformer can be adjusted to have different numbers of turns on the secondary coil.

Suggest why. (2 Marks)

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MTChemist
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Voltages which are too high or low can both cause the malfunction of electrical appliances.

The size of the output voltage depends on the number of turns on the secondary compared to the primary coil.

a step-up transformer, which steps-up voltage, has more turns in the secondary than in the primary.
a step-down transformer, which steps-down voltage, has fewer turns in the secondary than in the primary.


Changing the number of turns in the coils allows you to adjust the output voltage therefore making it suitable for a variety of different appliances which have different voltage needs.

Hope this helps
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TacticalDebation
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(Original post by MTChemist)
Voltages which are too high or low can both cause the malfunction of electrical appliances.

The size of the output voltage depends on the number of turns on the secondary compared to the primary coil.

a step-up transformer, which steps-up voltage, has more turns in the secondary than in the primary.
a step-down transformer, which steps-down voltage, has fewer turns in the secondary than in the primary.


Changing the number of turns in the coils allows you to adjust the output voltage therefore making it suitable for a variety of different appliances which have different voltage needs.

Hope this helps
Thank you!
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