CK-12 Foundation
Ck 12: Internal Resistance of a Battery
[Free Registration/Login may be required to access all resource tools.] Batteries have both an ideal internal voltage and a terminal voltage, which is less due to internal resistance. This lesson presents sample problems and a video...
Physics Aviary
Physics Aviary: Practice Problems: Internal Resistance of Battery Problem
Determine the internal resistance of a battery based on the graph of terminal voltage vs. current. Also find the maximum current and the electrochemical potential.
Other
Univ.of Delaware: Real Batteries and Battery Testers
A discussion of various principles related to voltage. The operation of battery testers and voltmeters are explained. The importance of the internal resistance of a power source is discussed.