Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Electrical current and Resistance and Energy

  1. Feb 17, 2008 #1
    1. The problem statement, all variables and given/known data
    A 12v battery causes a current of .60A through a resistor. a) what is the resistance? and b) how many joules of energy does the battery lose in 1 minute?

    2. Relevant equations
    R= V/I; I= Q/T

    3. The attempt at a solution
    I understand part A that is just algebra and I got 20 ohms,
    but I dont know how to translate this into energy lost. Can I use that second equation somehow with 60 seconds?
  2. jcsd
  3. Feb 17, 2008 #2
    never mind i figured it out i was dividing instead of multiplying!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook