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: Problem 1 (please help)

  1. Mar 15, 2007 #1
    1. The problem statement, all variables and given/known data

    A 10-ohm resistor has a constant current. If 1200 C of charge flow through it in 4 minutes what is the value of the current?
    A) 3.0 A
    B) 5.0 A
    C) 11 A
    D) 15 A
    E) 20 A


    3. The attempt at a solution

    I get B as an answer. I=(Q/t). I= 1200C/ (4 * 60) = 5.0 A
    The book says the answer is D. I thought the problem provided to much information. Can someone explain how D might be an answer.
     
  2. jcsd
  3. Mar 15, 2007 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Your method and answer are correct; answer D is not. The value of the resistance is irrevelant to the question asked, but don't let that distract you. :wink:
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook