A heating element of mass $100\,\text{g}$ and having specific heat of $1\,\text{J/(g}^\circ\text{C})$ is exposed to surrounding air at $27^\circ\text{C}$. The element attains a steady state temperature of $127^\circ\text{C}$, while absorbing $100\,\text{W}$ of electric power. If the power is switched off, then approximate time taken by the element to cool down to $126^\circ\text{C}$ will be (neglect radiation)