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Initially, a single capacitance C1 is wired to a battery. Then capacitance C2 is added in parallel. Are (a) the potential difference across C1 and (b) the charge i1 on C1 now more than, less than, or the same as previously? (c) Is the equivalent capacitance C12 of C1C2 more than, less than, or equal to C1? (d) Is the charge stored on C1 and C2 together more than, less than, or equal to the charge stored previously on C1?
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