Physics

Electric Fields — Multiple-Choice Questions (Edexcel IAL Physics): Exam Questions

4 questions · 4 marks · ≈ 4 min

Guided practice

11 markmedium

Which of the following graphs shows how the electric field strength E varies with distance r from a positive point charge?

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Choose your answer

21 markmedium

The electric potential V varies with the distance r from a charged object as shown.

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At which distance, A, B, C or D, does the electric field strength have its maximum value?

Choose your answer

31 markmedium

The diagram shows two metal plates with a potential difference V across them.

The path of an electron travelling between the plates is shown.

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The electron is deviated through an angle θ.

Which row of the table shows changes that will cause θ to decrease?

	V	Distance between plates
A	doubled	halved
B	doubled	unchanged
C	halved	doubled
D	unchanged	halved

Choose your answer

41 markmedium

The diagram shows an oil droplet of mass $m$ between two parallel metal plates separated by a distance $d$ . The upper plate is at potential $+ V$ and the lower plate is at potential $- V$ . The droplet is stationary.

Two parallel plates with voltage +V and -V. A point charge -q is between the plates, separated by distance d.

What is the magnitude of the charge on the droplet?

Choose your answer

$\frac{mgd}{V}$

$\frac{mgd}{2V}$

$\frac{mg}{Vd}$

$\frac{mg}{2Vd}$

Distance between plates

doubled

halved

doubled

unchanged

halved

doubled

unchanged

halved