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3 marksElectric Fields

CAPE Physics Unit 2 · 2006 · Paper 1 · Question 8(b)

Calculate the speed of the electrons after being accelerated through a potential difference of 3000 V.

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Other parts of this question

  1. 8(a)Show on the screen of Figure 10 the diffraction pattern observed when electrons pass through the graphite sheet.[2 marks]
  2. 8(c)Calculate the de Broglie wavelength of the electrons emitted from the anode.[3 marks]
  3. 8(d)Describe what changes would be observed in the diffraction pattern on the screen if the accelerating voltage were decreased.[2 marks]

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