At t = 0, the capacitor has charge q₀. Switch S is then closed. The heat lost in the 3R resistor is x×10⁻⁶ J. Find x. Given q₀ = 15 µC and C = 6/55 µF.

Question

G1 Physics · Accepted Answer

The initial capacitor energy is q₀²/(2C). During discharge, heat divides among the resistive path according to the circuit shown. The heat in 3R is 225×10⁻⁶ J. Therefore x = 225.