A capacitor circuit: C1 and C2 are in series, C3 and C4 are in series, and these two collections 1-2 & 3-4 are in parallel with each other. C1 =1.00pF , C2 = 0.600pF, C3 = 3.20pF and C4 = 2.40pF. What is the total charge stored in the system if it is connected to a 5.07V power supply?

the answer is a. at the equator

answer: the potential energy decreases from 379 j to 243 j

explanation:

for the law of conservation of energy, the total energy in a system must be conserved. the total energy of the system is given by the sum of kinetic (k) and potential (u) energy:

e = k + u

the total energy is e=675 j, and this does not change.

initially, the kinetic energy is k=296 j, so the potential energy is

at the end, the kinetic energy is k=432 j, so the potential energy is

so, we see that the potential energy has decreased from 379 j to 243 j.