Which is the better way to connect lights and other electrical appliances in domestic wiring: series circuits or parallel circuits? Why? (b) Christmas tree lamps are usually wired in series. What happens if one lamp breaks?
(a) Which is the better way to connect lights and other electrical appliances in domestic wiring: series circuits or parallel circuits? Why?
(b) Christmas tree lamps are usually wired in series. What happens if one lamp breaks?
(c) An electrician has wired a house in such a way that if a lamp gets fused in one room of the house, all the lamps in other rooms of the house stop working. What is the defect in the wiring?
(d) Draw a circuit diagram showing two electric lamps connected in parallel together with a cell and a switch that works both lamps. Mark an Ⓐ on your diagram to show where an ammeter should be placed to measure the current.
(a) Parallel circuits: Because if one electrical appliance stops working due to some defect, then all other appliances in the circuit will keep working properly.
(b) All the other lamps stop glowing.
(c) All lamps are connected in series.
(d)
-
Explain the following: (a) Why is the tungsten used almost exclusively for filament of electric lamps? (b) Why are the conductors of electric heating devices such as bread toaster and electric irons, made of an alloy rather than a pure metal?
4 years ago
-
An electric heater of resistance 8 W draws a current of 15 A from the service mains for 2 hr. Calculate the rate at which heat is developed in the heater.
4 years ago
-
Which uses more energy, a 250 W TV set in 1 hr or a 1200 W toaster in 10 minutes?
4 years ago
-
Two lamps, one rated 100 W at 220 V, and the other 60 W at 220 V, are connected in parallel to electric mains supply. What current is drawn from the line if the supply voltage is 220 V?
4 years ago
-
Compare the power used in the 2 Ω resistor in each of the following circuits: (a) A 6 V battery in series with 1 Ω and 2 Ω resistors, and (b) A 4 V battery in parallel with 12 Ω and 2 Ω resistors.
4 years ago
- 321 Forums
- 27.3 K Topics
- 53.8 K Posts
- 65 Online
- 12.4 K Members