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Question 18M.2.HL.TZ1.7c

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Date May 2018 Marks available [Maximum mark: 2] Reference code 18M.2.HL.TZ1.7c
Level HL Paper 2 Time zone TZ1
Command term Explain Question number c Adapted from N/A
c.
[Maximum mark: 2]
18M.2.HL.TZ1.7c

A capacitor consists of two parallel square plates separated by a vacuum. The plates are 2.5 cm × 2.5 cm squares. The capacitance of the capacitor is 4.3 pF. 

(c)

The capacitor is fully charged and the space between the plates is then filled with a dielectric of permittivity ε = 3.0ε0.

Explain whether the magnitude of the charge on plate A increases, decreases or stays constant.

[2]

Markscheme

charge increases

because capacitance increases AND pd remains the same.

[2 marks]

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