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4.5.6a Construction and operation of a transformer

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Question 52

An ideal transformer has NpN_{\text{p}}Np​ turns on its primary coil and NsN_{\text{s}}Ns​ turns on its secondary coil. The current in the primary coil is IpI_{\text{p}}Ip​ and the current in the secondary coil is IsI_{\text{s}}Is​.

What is the relationship between these four quantities?

A

IpIs=NpNs\frac{I_{\text{p}}}{I_{\text{s}}} = \frac{N_{\text{p}}}{N_{\text{s}}}Is​Ip​​=Ns​Np​​

B

IpIs=NsNp\frac{I_{\text{p}}}{I_{\text{s}}} = \frac{N_{\text{s}}}{N_{\text{p}}}Is​Ip​​=Np​Ns​​

C

Ip×Is=Np×NsI_{\text{p}} \times I_{\text{s}} = N_{\text{p}} \times N_{\text{s}}Ip​×Is​=Np​×Ns​

D

IpIs=Np×Ns\frac{I_{\text{p}}}{I_{\text{s}}} = N_{\text{p}} \times N_{\text{s}}Is​Ip​​=Np​×Ns​

Markscheme

4.5.6a Construction and operation of a transformer Questions

  1. IGCSE
  2. /Physics
  3. /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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