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संबंधित प्रश्न
An electric bulb is rated at 220 V, 100 W. What is its resistance?
An electric kettle connected to the 230 V mains supply draws a current of 10 A. Calculate:
(a) the power of the kettle.
(b) the energy transferred in 1 minute.
At a given time, a house is supplied with 100 A at 220 V. How many 75 W, 220 V light bulb could be switched on in the house at the same time (if they are all connected in parallel)?
An electric kettle is rated 2.5 kW, 250 V. Find the cost of running the kettle for two hours at Rs. 5.40 per unit.
In an electric radiator or room heater, state with reason, why the porcelain tube wound with a nichrome wire is placed between the pole and principal focus of the parabolic concave reflector.
Why is a concave reflector placed behind the heating element in a room heater.
An electric bulb is marked 100 W, 230 V. What does this mean?
Give two precautious that you would take while putting off an electric switch.
Three 250 W heaters are connected in parallel to a 100 V supply, Calculate total current taken from the supply.
1 kWh is equal to:
