Mathematics · Capacitance
A parallel combination of two capacitors of capacities 2C and C is connected across a 5 V battery. When they are fully charged, the charges and energies stored in them are Q1, Q2 and E1, E2 respectively. Then the value of E1 - E2Q1 - Q2 in J/C is (where capacity is in Farad, charge in Coulomb, and energy in Joule):
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