Calculating Current and Resistance: "17V, 3C, 25J

[warnexus]

Homework Statement

http://i33.photobucket.com/albums/d86/warnexus/emf_zpsbff89890.jpg

Homework Equations

Current = (emf)/(resistance)

Capacitance = (Charge)/(voltage)

Stored energy = (Capacitance)(Volt ^ 2) /(2)

The Attempt at a Solution

I need to find current and resistance so I can find emf.

capacitance = (charge)/(volt)

stored energy = (charge(voltage)/(2)

25 J (2) /(3C) = 50/3

voltage is 50/3 or 17 V.

 

[rude man]

This has nothing to do with either resistance or capacitance.

You have a battery rated at "emf" volts and you have sucked 3 C (coulombs) of charge out of it. How much energy is that?

 

[warnexus]

This has nothing to do with either resistance or capacitance.

You have a battery rated at "emf" volts and you have sucked 3 C (coulombs) of charge out of it. How much energy is that?

thats right! volt is measured in joules per coulomb! got it thanks!