Question

safety measures to be taken while making an electric circuit

Answer 1

safety measures while making an electric circuit:
1 avoid water while working with electric appliance 
2 Never use equipment with frayed cords, damaged insulation or broken plugs.  
3 Always use insulated tools while working.
4 it is possible to get a very small shock if you touch the wire directly while attached to the battery. You can avoid this by only touching the insulated part of the wire or removing the batteries until you install the light bulb.
5Light bulbs can heat up quickly so be careful when installing and removing the bulb.

Answer 2

You should only be using a small cell. You should work in the supervision of an adult. You should work carefully and not touch the ends of the wires with bare hands.