CAPE Physics Unit 2 · 2012 · Paper 1 · Question Q8
A capacitor of capacitance, C, is made using two parallel metal plates separated by 1\text{ mm} in air. The area of overlap of the plates is 20\text{ cm}^2. If the distance between the plates is increased to 2\text{ mm} and the area of overlap of the plates is halved, what is its new capacitance?
- (A)
C/4 - (B)
C/2 - (C)
2C - (D)
4C
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