Two bulbs are marked 100 W, 220 V and 60 W, 110 V. The ratio of their resistances is
2 : 1
5 : 3
12 : 5
5 : 12
Two fans rated (60w 220v) & (60w, 110v). Calculate their resistance and current passing in bulbs.
Two bulbs A and B are marked as ‘A’ 60W, 220V & ‘B’ 100W, 220V are connected in parallel to 220 V source. Which of the two will glow brighter?