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Explain how a basic transformer is built, highlighting the use of a soft-iron core for changing voltage levels.

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Cambridge IGCSE PhysicsElectricity and magnetismCore content

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Explain how a basic transformer is built, highlighting the use of a soft-iron core for changing voltage levels

This point belongs to The transformer, especially The transformer outcomes.
You need to be able to explain how a basic transformer is built, highlighting the use of a soft-iron core for changing voltage levels.
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Describe

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Paper 3 structured question: The transformer

Paper 3Theory (Core)1 marks

Description

Transformer Components

A transformer consists of two coils of wire and a core material. The primary coil is connected to an AC source, while the secondary coil delivers the output voltage. The core is made of soft iron to improve efficiency.

a
State the purpose of a transformer.
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Related learning objectives

Identify and define the roles of primary and secondary coils, as well as the concepts of step-up and step-down transformers.
The transformer outcomes
Recall and apply the formula Vp/Np = Vs/Ns, where V and N represent voltage and number of turns for primary and secondary coils respectively.
The transformer outcomes
Discuss how transformers are utilized in the high-voltage transmission of electrical energy.
The transformer outcomes
List the benefits associated with transmitting electricity at high voltages.
The transformer outcomes
Clarify how a simple iron-cored transformer operates based on its principles.
The transformer outcomes

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