An electric lamp is marked $220 \mathrm{V}, 100 \mathrm{W}.$ It is used for $5$ hours daily. Calculate its resistance while glowing.

An electric lamp is marked $220 \mathrm{V}, 100 \mathrm{W}.$ It is used for $5$ hours daily. Calculate energy consumed in $\mathrm{kWh}/\mathrm{day}$.

An electric bulb draws a current $0.8 \mathrm{A}$ and works on $250 \mathrm{V}$ on the average $8$ hours a day. If energy costs $₹3$ per $\mathrm{kW} \mathrm{h}$, calculate monthly bill for $30$ days.

Three $2 \mathrm{\Omega }$ resistors, $A, B$ and $C$ are connected as shown in figure. Each of them dissipates energy and can withstand a maximum power of $18 \mathrm{W}$ without melting. Find the maximum current that can flow through the three resistors.