Advertisements
Advertisements
Question
Name the physical quantity which is measured in kW.
Advertisements
Solution
Electrical power is measured in kW.
APPEARS IN
RELATED QUESTIONS
An electric motor takes 5 A from a 220 V line. Determine the power of the motor and the energy consumed in 2 h.
An electric bulb is connected to a 220 V power supply line. If the bulb draws a current of 0.5 A, calculate the power of the bulb.
A 2 kWh heater, a 200 W TV and three 100 W lamps are all switched on from 6 p.m. to 10 p.m. What is the total cost at Rs 5.50 per kWh?
What is the maximum power in kilowatts of the appliance that can be connected safely to a 13 A ; 230 V mains socket?
An electric bulb of resistance 500 Ω draws current 0.4 A from the source. Calculate:
- the power of bulb and
- the potential difference at its end.
An electric heater is rated 220 V, 550 W. What does this statement mean?
A. bulb is rated at 100W, 250V and another one at 60W, 250V. What is the current flowing in the circuit if the two bulbs are put in series across a 220 V mains supply?
In the given figure, the emf of the cell is 2.2 V, and if internal resistance is 0.6 Ω. Calculate the power dissipated in the whole circuit.
