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3 marksElectric Fields

CAPE Physics Unit 2 · 2017 · Paper 2 · Question 6(d)

When the apparatus is adjusted so that droplets rise at constant speed in air, draw and label a free-body diagram showing all the forces acting on such a droplet.

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  1. 6(a)Name the apparatus components labelled U, V, W, X, and Y in Figure 8.[2 marks]
  2. 6(b)(i)Outline the experimental procedure followed during the Millikan oil drop experiment.[4 marks]
  3. 6(b)(ii)State the two major conclusions deduced from Millikan's oil drop experiment.[2 marks]
  4. 6(c)An oil drop of mass 3.0 × 10⁻¹⁵ kg is held stationary between two horizontal metal plates separated by 1.0 cm with an applied voltage of 350 V. Calculate the…[4 marks]

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