diy wheatstone bridge working model /easy way how to make wheatstone bridge model for CBSE 

Thankyou sir

What type of wire is used for the connection?

thanks

How did you connect the wire and the bulb with the battery please tell Also tell me about the positive and negative terminal uow to connect and which ti connect with which in detail please

From where did you get those bulbs

And how's it working with 9volts battery

Why u can't use ur mouth