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Unit 4.5.6 The Transformer SUPPLEMENT
Explain the principle of operation of a simple iron-cored transformer
Recall and use the equation for 100% efficiency in a transformer
Ip
Vp
= I
sVs
where p and s refer to primary and secondary
8 Recall and use the equation
P = I2R
to explain why power losses in cables are smaller when the voltage is greater
**Every Powerpoint includes learning objectives, a starter and plenary, suitable activities and review questions with mark scheme.
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