Advertisements
Advertisements
प्रश्न
Name the physical quantity which is measured in kW.
Advertisements
उत्तर
Electrical power is measured in kW.
APPEARS IN
संबंधित प्रश्न
Define Electric power.
An electric motor takes 5 A from a 220 V line. Determine the power of the motor and the energy consumed in 2 h.
What is the SI unit of (i) electric energy, and (ii) electric power?
What is the meaning of the symbol kWh? Which quantity does it represent?
When a current I flows through a resistance R for time t, the electrical energy spent is given by:
(a) IRt (b) I²Rt (c) `IR^2t` (d) `I^2R ⁄t`
Two bulbs are rated 60 W, 220 V and 60 W, 110 V respectively. Calculate the ratio of their
resistances
The diagram 31 shows a 3 terminal plug socket.
(i) What is the purpose of the terminal E?
(ii) To which part of the appliance is the terminal E connected?
(iii) To which wire L or N, is the fuse connected and why?

Two resistors A and B of 4 Ω and 6 Ω, respectively are connected in parallel. The combination is connected across a 6 volt battery of negligible resistance. Calculate the power dissipated in each resistor.
An electric bulb is rated as 100W – 250V. What information does it convey? Calculate the resistance of its filament while glowing.
