The ration of the restistances of 100 W and 40 W bulbs of the same rated voltage is

Which has more resistance : 100 W bulb or 60 W bulb ?

If R_1 and R_2 are respectively the filament resistances of a 200 W bulb and a 100 W bulb designed to operate on the same voltage, then

If R_(1) and R_(2) are filament resistances of a 200 W and a 100 W bulb respectively, designed to operate on the same voltage, then :

The powers of three bulbs 40 W , 60 W and 100 W . When the supply voltage is 220V. Which will greatest brighter?

The rating of an electric bulb is 220 V-100 W. if a rated voltage is applied then how many electrons will pass through the filament in one second ?

A 100W bulb and a 25W bulb are desigened for the same voltage. They have filaments of the same length and material. The ratio of the diameter of 100W bulb to that of the 25W bulb is

Two bulbs 40W and 60W and rated voltage 240V are connected in series across a potential difference of 420V.The bulb which will work above its rated voltage is ----------W