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puneetverma24
07-05-2010, 07:08 PM
I have seen GND (ground) symbols several time in circuits ,

like in microcontroller 8051 we connect 40th pin with 5v & 20th pin with GND
does here i have to connect the -ve terminal of battery at pin 20th or something else ?

pratheek
07-05-2010, 07:36 PM
All the current that flows in a circuit comes back to one point and this is called the Ground.

It is usually taken as the reference for measuring the potential of any other point in the circuit and is usually assigned a potential of 0 V.

You will have to connect the -ve of the battery to the GND pin.

puneetverma24
07-06-2010, 08:53 AM
Thanks pratheek