Which of the following equations correctly defines the capacitance of a…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Which of the following equations correctly defines the capacitance

C

of a parallel-plate capacitor in terms of the magnitude of charge

Q

on either plate and the potential difference

\Delta V

between the plates? (a)

C = \dfrac{1}{2}\,\dfrac{Q}{\Delta V}

(b)

C = 2\,\dfrac{Q}{\Delta V}

(c)

C = \dfrac{Q}{\Delta V}

(d)

C = \sqrt{2}\,\dfrac{Q}{\Delta V}