Question

In the circuit shown, R1 = 10 Ω, R2 = 4 Ω, R3 = 10 Ω, ε = 10 V, and capacitor has a capacitance C = 2 μF and the switch S has been closed for a long time. After switch S is opened, how much total energy is dissipated through R3?

Answer 1

U: is the capacitor's energy
C: is the capacitance
R: is the resistance
q: is the capacitor's charge