SCEN103 Class 6

Tell me more about batteries!

	Fun and Learning: Battery Science:     Anatomy, Chemistry, Performance, and Inside a Battery Timeline and Quiz Comprehensive Battery Guide and Guide to Proper Battery Care OEM page: lots of data!     Primary Systems, System Comparisons
	Technical Information: Battery Engineering Guide Products:     Advanced Formula, Energizer Firsts     The Energizer On-Battery Tester, Life with and without Batteries

Electrical Energy

• Review discussion of electrical power
• Sample calculation of power delivered and dissipated in sample circuit
  -- for example, 3.0 V battery and 6.0 ohm resistor.

• Internal resistance
  
  • Measure voltage across battery with no R, 3 ohm, and 1.5 ohm.
  • Plot "terminal" voltage vs. current.
  • Examine difference -- need concept of internal resistance
  • Results of the demonstration
• Discussion of battery characteristics
• Primary battery types: advantages and disadvantages
• Comparative energy cost?

• Consider the different battery packages that are commonly available: AAA, AA, C, or D. Does the data on battery characteristics support the following hypothesis:
  The energy content of a battery is proportional to its volume.
• Please support your discussion with calculation and graph.