Two bulbs are marked 200 watt - 250 volt and 500 watt - 250 volt. Compare the heat generated in the two bulbs per second when the bulbs are connected in series.

Two bulbs are marked 60 W and 40 W . What is the ratio of the resistance of their coils.

Two bulbs are marked 100W and 60W. What is the ratio of the resistance of their coils ?

Two heaters are marked 200 V , 300 W and 200 V , 600 W . If the heaters are connected in series and the combination connected to a 200 V d.c.supply, find the current in the circuit.

An elecric bulb is marked 100w 250 Volt. Find the The current flowing through the filament of the bulb

An elecric bulb is marked 100w 250 Volt. Find the resistance of the filament inside the bulb

Two electric bulbs marked 220 V and 100 W are connected to the main source in parallel. What is the power consumed by the combination ?

Two bulbs,one of 50 watts and another of 25 watts , are connected in series to the mains. The ratio of the current througth them is