# Homework Help: 2 Questions on Ohm's Law and Power

1. Mar 2, 2005

### Lovely

If a single lamp has resistance of 3 ohms, and a second and third identical lamp is added wouldn't the second be 6, and third be 9.
If a part of an electric circuit diaaipates energy at 6 when it draws a current of 3A, what voltage is impressed across it? What does 6 represent :surprised

2. Mar 2, 2005

### dextercioby

How are the 2 lamps "added",in series,in parallel,mixed...?

As for the second,i think they mean 6W,thoough i'm not sure.

Daniel.

3. Mar 2, 2005

### Lovely

Daniel,
The question is as followed: In a simple circuit 6-volt dry cell pushes charge through a single lamp whiich has a resistance of 3 ohms. the current through the circiut is 2 amps.
If a second identical lamp is connected in series, the 6 volt battery must push a charge through a total resistance of how many ohms. Same for third identical lamp

4. Mar 2, 2005

### dextercioby

Well,what do you think...?What do you know about series coupled resistors...?What's the equivalent resistance...?

Daniel.