Each of the three resistors in the figure has a resistance of $2.4 \mathrm{\Omega }$ and can dissipate a maximum of $36 \mathrm{W}$ without becoming excessively heated. What is the maximum power (in $\mathrm{W}$) the circuit can dissipate?

In the circuit shown in figure, a capacitor of capacitance $5 \mathrm{\mu }\mathrm{F}$ is connected to a source of constant emf of $200 \mathrm{V}$. Then the switch was shifted to contact $2$ from contact $1$. Find the amount of heat generated in the $400 \mathrm{\Omega }$ resistance in $\mathrm{m}\mathrm{J}$.