Advertisements
Advertisements
प्रश्न
Figure shows two ways of connecting the three bulbs A, B and C to a battery. Name the two arrangements. Which of them do you prefer to use in a household circuit? Give a reason to support your answer.
उत्तर
(a) is SERIES arrangement .
(b) is parallel arrangement.
A PARALLEL arrangement of bulbs is preferred as if one of the bulbs gets fused, the other two will keep glowing.
APPEARS IN
संबंधित प्रश्न
S.I. unit and commercial unit of electrical energy are same.
The unit in which we pay the cost of electricity is ..........
In a household electrical circuit, the appliance are connected in ............with the mains.
One kilowatt hour is equal to ............ joule.
One kilowatt is equal to
The purpose of an electric meter in a house is
An electric iron of power 1.5 kW is used for 30 minutes to press the clothes. Calculate the electrical energy consumed in
- kilowatt-hour
- joule.
In a premise 5 bulbs each of 100 W, 2 fans each of 60 W, 2 A.Cs each of 1.5 kW is used for 5 h per day. Find:
- Total power consumed per day,
- Total power consumed in 30 days,
- Total electrical energy consumed in 30 days.
- The cost of electricity at the rate of ₹ 6.25 per unit.
Two lamps, one rated 220 V, 50 W and the other rated 220 V, 100 W, are connected in series with mains of 220 V. Explain why does the 50 W lamp consume more power.
What is the resistance, under normal working conditions, of an electric lamp rated at '240 v, 60 W' ? If two such lamps are connected in series across a 240 V mains supply, explain why each one appears less bright.