1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Cost of a energy from a battery

  1. Dec 4, 2008 #1
    A transistor radio operates by means of a 9.5 V battery that supplies it with a 58 mA current.

    (a) If the cost of the battery is $0.85 and it lasts for 300 h, what is the cost per kWh to operate the radio in this manner?
     
  2. jcsd
  3. Dec 4, 2008 #2

    mgb_phys

    User Avatar
    Science Advisor
    Homework Helper

    Re: um..

    You have to make an attempt at the question!
    How do you calculate Watts form volts and amps?
    What is a KWh?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?