POWER RATING OF ELECTRIC BULB

Bulb rated 200W, 100V. Find R connected in series to bulb in a circuit with 200V so that bulb delivers same power.

Power | Power Across Bulbs

Electric Power in Battery and Resistance|| Bulb Rated Voltage|| power|| Brightness OF Bulb in Combination

Assertion : In lower combination of electric bulbs the bulb of lower power emit more light than that of highest power bulb Reason : The power power bulb in series gets more of higest power bulb

Assertion: In series combination of electric bulbs th ebulb of lower power emits more light than that of higher power bulb. Reason: The lower power bulb in series gets more current than the higher power bulb.

An electric bulb rated as 200 W at 100 V is used in a circuit having 200 V supply. The resistance 'R' that must be put in series with the bulb so that the bulb delivers the same power is __________ Omega .

Two electric bulbs of 100 W each is used for 10 hours in the month of June. Write the following steps in sequential order to find the numbe of units of electricity consumed in the month of June. (A) The number of units of electricity consumed by both bulbs in the month of June is the total elec-trical energy consumed by bulbs expressed in W h divided by 100 W h . (B) Note the rated power of each electric bulb, time of electrical consumption of each bulb per day from the given data. (C ) We know, one electrical unit = 1 kW h or 1000 W h . (D) Calculate the amount of electrical energy con-sumed by both the bulbs in the month of June using, (sum of the electrical power of both the bulb) xx (time of consumption in one day) xx 30 days.

An electric bulb rated 220 V and 60 W is connected in series with another electric bulb rated 220 V and 40 W . The combination is connected across a source of emf 220 V . Which bulb will glow more?

A torch bulb is rated 5 V and 500 mA. Calculate Its Power