A battery has an open circuit potential difference $10 \mathrm{V}$ between the terminals. When loads $9 \mathrm{\Omega }$ and $4 \mathrm{\Omega }$ are connected one by one across the battery, the power in the load resistance is the same. The amount of heat approximately generated in one second in the load when a load of $5 \mathrm{\Omega }$ is connected across the battery will be