Finding Power in watt with a real battery

[dmsgo89]

Homework Statement

calculate the power dissipated by a resistor R connected to the battery when R = 2.4 ohm.

Homework Equations

I=V/R

The Attempt at a Solution

I found A of battery that given and put R value given to find P, however I cannot get a right answer.

What did I wrong?

http://session.masteringphysics.com/problemAsset/1021126/12/jfk.Figure.23.P47.new.jpg

The images shows that the battery has 10 ohm and 1.5V.

It is due tonight and I am lost :( please help!

 

[dmsgo89]

oh and I know P=I*V=V^2/R=RI^2

 

[Integral]

Please show us exactly what you have calculated and why you calculated it.