P.D. across each capacitor is V1=n14 V Energy stored across the combination is U1=n1×21C1n1216 V2=2n116C1 V2 
Energy stored across parallel combination is U2=n2×21C2 V22n116C1v2=2n2C1v2⇒C2=n1n216C1
A series combination of n1 capacitors, each of value C1, is charged by a source of potential difference 4 V. When another parallel combination of n2 capacitors, each of value C2, is charged by a source of potential difference V, it has the same (total) energy stored in it, as the first combination has. The value of C2, in terms of C1, is then
Held on 30 Apr 2010 · Verified 9 Jul 2026.
n1n22C1
16n1n2C1
2n1n2C1
n1n216C1
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