Take the potential of the point \( B \) in figure math xmlns=http://www.w3.org/1998/Math/MathMLm...

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Take the potential of the point \( B \) in figure math xmlns=http://www.w3.org/1998/Math/MathMLmo(/momn31/mnmo-/momiE/mimn7/mnmo)/mo/math to be zero. (a) Find the potentials at the points \( C \) and \( D \). (b) If a capacitor is connected between \( C \) and \( D \), what charge will appear on this capacitor ?
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