(a)tungsten is used exclusively for filament of electric lamps. (b) series arrangements is not used for domestic circuits. (c) copper and aluminium wires are usually employed for electricity transmission.
Answers
Answer:
tungsten is use because it has high melting point.
as current in circuit increase it doesn't melt.
Series arrangement is not used because it causes overloading and many appliances are damaged. Because they have listed melting point and are good conductor of electricity.
(a)tungsten is used exclusively for filament of electric lamps because it has high melting point and it does not melts on high heating.
(b) Series arrangement is not used for domestic circuits as if any high voltage comes into the circuit then it would led to short circuit and all the appliances will be damaged.
(c) Copper and aluminium wires are usually employed for electricity transmission as they are good conductor of electricity. Therefore, they are used and they are less costly too.