Physics 9702 · AS & A Level · Electromagnetic induction

Electromagnetic induction — practice question

A basic transformer is shown in Fig. 6.1.
(a(i))[2]

State why the iron core is laminated.

(a(ii))[1]

State what an ideal transformer means.

(b)[2]

An ideal transformer has 300 turns on the primary coil and 8100 turns on the secondary coil. The root-mean-square input voltage to the primary coil is $9.0\,\text{V}$. Calculate the peak voltage across the load resistor connected to the secondary coil.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: to lower power loss in the core

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