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Paper 2 H - SAMPLE SET 1 Q4 Answers

4) Figure 10 shows a straight wire passing through a piece of card.
​A current (I) is passing down through the wire. 
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4.1) Describe how you could show that a magnetic field has been produced around the wire. [2 marks]

4.2) Figure 11 shows the ignition circuit used to switch the starter motor in a car on. The circuit includes an electromagnetic switch. 
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Explain how the ignition circuit works. [4 marks] 

​(Total for Question 4 = 6 marks)

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