Advertisements
Advertisements
Question
Advertisements
Solution
APPEARS IN
RELATED QUESTIONS
What is the SI unit of (i) electric energy, and (ii) electric power?
An electric lamp is labelled 12 V, 36 W. This indicates that it should be used with a 1 V supply. What other information does the label provide?
When an electric lamp is connected to 12 V battery, it draws a current of 0.5 A. The power of the lamp is:
(a) 0.5 W
(b) 6 W
(c) 12 W
(d) 24 W
How much energy does a 100 W electric bulb transfer in 1 minute?
(a) 100 J
(b) 600 J
(c) 3600 J
(d) 6000 J
Why is heating coil wound in the form of a helix in electric stove?
Why is a concave reflector placed behind the heating element in a room heater.
Two electric lamps each rating 100 W, 110 V are connected in series to a 220 V power supply and two other electric lamps each of marking 100 W, 220 V are connected in parallel to the same power supply. Will anyone of the two combinations give more light than the other? Give a reason for your answer.
What is the order of current drawn by appliances connected to the ‘light circuit’ of a household?
Three 250 W heaters are connected in parallel to a 100 V supply, Calculate total current taken from the supply.
What is the commercial unit of electrical energy? Represent it in terms of joules.
