Question

1) how to locate a current carrying wire concealed in a wall? 2) what is the compsition of anico and anipernag? 3) what should be done in case a person comes contact with live wire?

Answer 1

we just have to move magnetic compass on the wall since their will be magnetic field produced by a current carrying conductor and because of that magnetic fielt the niddle of compass get deflected form its north south position 

Answer 2

1) To locate a current carrying wire in a concealed wall:

To locate current carrying wire in a concealed wall, a plotting compass can be used. If "plotting compass" is moved on 'wall', it will show a deflection in the needle at the place where the wire is concealed.  

2) Compsition of anico and anipernag:

Alnico is a member of ally family that is used to make permanent magnets. The main constituents of alnico are cobalt, nickel and aluminium.  

3) When a person comes in contact with live wire:

During the contact of a person with live wire, he or she must be taken away from the live wire. The person must be taken away from the wire using a non-conductive material so that the current does not harm the person in any manner.