Quelpr
4 marksElectric Fields

CAPE Physics Unit 2 · 2017 · Paper 2 · Question 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 number of excess electrons on the droplet.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  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(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…[3 marks]

More practice: the rest of this paper · more Electric Fields questions · all CAPE Physics Unit 2 past papers