Assertion: capacitor's difference | /r/HasProperty | figure
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text: We define the surface charge density on the plates as We know from previous chapters that when d is small, the electrical field between the plates is fairly uniform (ignoring edge effects) and that its magnitude is given by where the constant is the permittivity of free space, The SI unit of F/m is equivalent to Since the electrical field between the plates is uniform, the potential difference between the plates is Therefore (Figure)