Advertisements
Advertisements
प्रश्न
If the rating of an electric bulb is 100W – 230V, Explain its meaning.
Advertisements
उत्तर
If an electric bulb is rated as 100W – 230V, it means that the bulb is lighted on a 230V supply, it consumes 100W electric power (i.e., 100J of energy per sec.).
संबंधित प्रश्न
Define 1 kilowatt hour.
What is the energy conversion when an electric current passes through a metallic wire?
A device is used to transform 12 V a.c. to 200 V a.c. What is the name of this device? Name the principle on which it works.
You are required to connect a bulb, a fan and a socket outlet to the mains in one set A and an air-conditioner and a refrigerator to the mains in other set B. Will you recommend the wire of same thickness and same insulation in both? explain your answer.
I ampere of current is passed through a resistor of resistance R ohm for time t second. Obtain expression for
(i) the electrical energy, and
(ii) the electrical power spent.
An Electric bulb is marked 100 W, 230 V. What find the energy consumed by the bulb in one hour.
The resistance of filament of an electric heater is 500 Ω It is operated at 200V for 1 hour daily. Calculate the current drawn by the heater and the energy consumed in kWh, by the heater in a month of 30 days.
Find the cost of operating an electric toaster for two hours if it draws 8 A current on a 110 volt circuit. The cost of electrical energy is Rs. 2.50 per kWh.
