I can't understand this circuit

[kliker]

[PLAIN]http://img34.imageshack.us/img34/2739/image3sz.png

what is this circuit? can someone explain me? please I need to understand the basics in order to solve difficult exercises

thanks in advance

 

[kuruman]

All the connections to the ground are at the same potential. This means that you can replace the ground connections with a straight wire connecting the other end of the battery to the other end of each resistor. Redraw the circuit then and see if it makes more sense to you.

 

[kliker]

All the connections to the ground are at the same potential. This means that you can replace the ground connections with a straight wire connecting the other end of the battery to the other end of each resistor. Redraw the circuit then and see if it makes more sense to you.

thank you for the explanation what if the circuit was something like this

[PLAIN]http://img255.imageshack.us/img255/7705/26466399.jpg

is it possible to simplify it like you did with the first circuit?

 

[kuruman]

This circuit doesn't make much sense. You show only the "high" side of the battery. What is the "low" end of the battery connected to? Assuming the convention that the "low" side is grounded, then you can remove the two grounds and connect the low end of the battery to the other end with a straight wire.

 

[kliker]

This circuit doesn't make much sense. You show only the "high" side of the battery. What is the "low" end of the battery connected to? Assuming the convention that the "low" side is grounded, then you can remove the two grounds and connect the low end of the battery to the other end with a straight wire.

thanks I understand it now