Initially, a single capacitance C1 is wired to a battery. Then capacitance C2 is
ID: 1465504 • Letter: I
Question
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 q1 on C1 now more than, less than, or the same as previously? (c) Is the equivalent capacitance C12 of C1 and C2 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? e)Repeat Question 5 for C2 added in series rather than in parallel. i only care for e part and please with the full answer so i can understand why
Explanation / Answer
A) Let V be the potential difference
total charge q=C1V
When two capacitors are connected in parallel then
C12=C1+C2
NET CHARGE q=cv
(C1+C2)V
THEREFORE the potential difference across C1 is same as previously.
B) chaerge q1 across C1 is q1=C1V when added to capacitor C2 SO the charge q1 on C1 is same.
C)The equilant capacitance C12 is more then C1 and C2 as connected in parallel therefore more than C1
D) their eqilvalent capacitance is more than when added in parallel than when they are individuals so charge stored is more than C1