Two light bulbs in the circuit have rating $A\,[24\ V, 48\,W]$ and $B\,[24\ V, 36\,W]$ as shown.
When switch is closed bulb $A$ delivers $24\ watt$ $\&$ $B$ delivers $18\ watt$ .
When switch is open $A$ delivers $9\ watt$ $\&$ $B$ delivers $12\ watt$ approximately.
When switch is open $A$ delivers $24\ watt$ $\&$ $B$ delivers $18\ watt$ approximately.
When switch is open $'A'$ delivers $6\ watt$ and $B$ delivers $9\ watt$ approximately.
When a potential difference $V$ is applied across a wire of resistance $R$, it dissipates energy at a rate $W$. If the wire is cut into two halves and these halves are connected mutually parallel across the same supply, the same supply, the energy dissipation rate will become:
How many calories of heat will be produced approximately in a $210\, watt$ electric bulb in $5$ minutes .............. $cal $
If two bulbs of wattage $25$ and $30$, each rated at $220\, volts$, are connected in series with a $440$ $volt$ supply, which bulb will fuse
In the circuit shown in figure, the $5\,\Omega $ resistance develops $20.00\,cal/s$ due to the current flowing through it. The heat developed in $2\,\Omega $ resistance (in $cal/s$ ) is