# I can't understand this circuit

1. Apr 14, 2010

### kliker

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

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

Last edited by a moderator: May 4, 2017
2. Apr 14, 2010

### 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.

3. Apr 15, 2010

### kliker

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

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

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

Last edited by a moderator: May 4, 2017
4. Apr 15, 2010

### 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.

5. Apr 15, 2010

### kliker

thanks I understand it now