ECE112 
Current Charge and Voltage Problems      

Note: The assumption is that the appliance or device operates until the last coulomb 
      is used. 

2. You have a flashlight which gets accidentally turned on inside your backpack. 
   When on, the flashlight draws 500mA from its 3 AH cells. When you pull the 
   flashlight out to use it, the light goes out in 30 minutes. How long was the 
   light on inside your backpack?
   Ans: 5.5hr