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प्रश्न
An Electric bulb is marked 100 W, 230 V. What find the energy consumed by the bulb in one hour.
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उत्तर
Energy consumed in Is is 100 J.
∴ Energy consumed in hour = 100 × 60 × 60J = 360000 J.
संबंधित प्रश्न
Which of the following terms does not represent electrical power in a circuit?
How many joules are there in one kilowatt-hour?
The unit for expressing electric power is:
(a) volt
(b) joule
(c) coulomb
(d) watt
A potential difference of 6 V is applied across a 3 Ω resistor. What is the current flowinq throuqh the circuit?
Name the physical quantity which is measured in kW.
What changes in energy occur in an electric heater?
State two advantages of filling an inert gas in an evacuated electric filament lamp.
What is ‘Rating’ of an electric appliance?
What would happen and why, to an electric bulb when it is connected across a supply of voltage (i) lower (ii) higher than its proper rating?
