Two electric bulbs ($60\,W$ and $100\,W$ respectively) are connected in series. The current passing through them is

A $100\, W \, bulb\, B_1$ and two $60\, W \,bulbs \,B_2$ and $B_3$, are connected to a  $220\, V$ source, as shown in Figure. Now $P_1, P_2$ and $P_3$ are the output powers  of the bulbs $B_1, B_2$ and $B_3$ respectively. Then

Water of volume $2\, litre$ in a container is heated with a coil of $1\, kW$ at $27 \,^oC$. The lid of the container is open and energy dissipates at rate of $160\, J/s$. In how much time temperature will rise from $27\,^oC$ to $77\,^oC$ $[$ Given specific heat of water is $4.2\, kJ/kg$ $]$

The maximum power delivered to resistance $R$ is  ............... $W$

Two electric bulbs whose resistance are in the ratio of $1: 2$, are connected in parallel to a constant voltage source. The power dissipated in them has the ratio

In the following circuit composed of identical resistors, across which terminals would you connect a battery in order to dissipate energy in all resistors