# Homework 2 - across them The voltage across one capacitor...

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1 PHYS-1200 PHYSICS II HOMEWORK #2 SOLUTIONS

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3 Q25.03 a) Series. b) Parallel. c) Parallel. Q25.09 Since q = CV , then the larger the capacitance, the larger the charge. When in parallel, C p = C 1 + C 2 > C 1 or C 2 . When in series, C s = C 1 C 2 /( C 1 + C 2 ) < C 1 or C 2 . Then the capacitors can be ordered from largest down: C p > C 1 > C 2 > C s . The amount of charge is ordered: parallel, C 1 , C 2 , series. Q25.07 a) When two capacitors are connected in parallel, the terminals of battery are wired directly to the plates of each capacitor, applying the same potential difference
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Unformatted text preview: across them. The voltage across one capacitor is independent of how many are wired in parallel with it. b) Because q=CV , if potential doesn’t change, the charge must stay the same too. c) The equivalent capacitance is C 12 =C 1 +C 2 , which must be greater than C 1. d) The total charge stored on C 1 and C 2 is q = VC 12 = V ( C 1 +C 2 ) = q 1 +q 2 . It must be more than the charge stored previously on C 1 ....
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