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4.5.6a Construction and operation of a transformer

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Question 85

A transformer has $NpN_{\text{p}}$ turns in the primary coil and $NsN_{\text{s}}$ turns in the secondary coil.

Which row gives the values of $NpN_{\text{p}}$ and $NsN_{\text{s}}$ for a transformer that steps down a voltage of $V24,000\text{ V}$ to 240 V?

$Np=50,000N_{\text{p}} = 50,000$ and $Ns=500N_{\text{s}} = 500$

$Np=500N_{\text{p}} = 500$ and $Ns=50,000N_{\text{s}} = 50,000$

$Np=50,000N_{\text{p}} = 50,000$ and $Ns=5,000N_{\text{s}} = 5,000$

$Np=5,000N_{\text{p}} = 5,000$ and $Ns=50,000N_{\text{s}} = 50,000$

Markscheme

4.5.6a Construction and operation of a transformer Questions

IGCSE
Physics
4.5.6a Construction and operation of a transformer

136 exam-style questions on CIE IGCSE Physics 4.5.6a Construction and operation of a transformer. Each one has a worked solution and a mark scheme showing where the marks go.

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