Question

1. What name is given to the device which automatically cuts off the electricity supply during short-circuiting
in household wiring ?

2. What is the usual capacity of an electric fuse used (i) in the lighting circuit, and (ii) in the power circuit, of
a small house ?

3. Give the symbol of an electric fuse used in circuit diagrams.


4. State whether the following statements are true or false :
(a) A wire with a green insulation is usually the live wire.
(b) A miniature circuit breaker (MCB) works on the heating effect of current.


5. Alongwith live wire and neutral wire, a third wire is also used in domestic electric wiring. What name is
given to this third wire ?

plz help me its urgent ​

Answer 1

Answer:

1.electric fuse

4.b.false. it's work on megnetic effect of current

5.earth wire