Advertisements
Advertisements
प्रश्न
Name the physical quantity which is measured in kW.
Advertisements
उत्तर
Electrical power is measured in kW.
APPEARS IN
संबंधित प्रश्न
The commercial unit of energy is :
(a) watt
(b) watt-hour
(c) kilowatt-hour
(d) kilo-joule
When a current of 4.0 A passes through a certain resistor for 10 minutes, 2.88 × 104 J of heat are produced. Calculate
the power of the resistor.
the voltage across the resistor.
Calculate the resistance of an electric bulb which allows a 10 A current when connected to a 220 V power source.
What is electric power? State and define its S.I. unit.
Point out two main disadvantages of ‘Tree System’.
An electric filament lamp is connected to a supply of voltage higher than the recommended value. Give reasons, why compared with a normal performance, the lamp emits a brighter light and its life is shortened.
An electric bulb is rated as 100W – 250V. What information does it convey? Calculate the resistance of its filament while glowing.
What is the commercial unit of electrical energy? Represent it in terms of joules.
Two heaters A and B have power rating of 1 kW and 2 kW, respectively. Those two are first connected in series and then in parallel to a fixed power source. The ratio of power outputs for these two cases is ______
