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1 markThe p-n Junction Diode

CAPE Physics Unit 2 · 2004 · Paper 1 · Question 4(a)(i)

Semiconductor types and characteristics.

Explain what is meant by an n-type semiconductor.

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Other parts of this question

  1. 4(a)(ii)Explain what is meant by a p-type semiconductor.[1 mark]
  2. 4(b)(i)Explain how the circuit in Figure 4 could be modified so that the voltage at X is MAXIMUM when the LDR is in the dark.[1 mark]
  3. 4(b)(ii)Calculate the difference in the resistance of the LDR between the dark and light conditions.[6 marks]
  4. 4(b)(iii)Give ONE practical use for the circuit in Figure 4.[1 mark]

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