*77.  A battery delivering a current of 55.0 A to a circuit has a terminal voltage of 23.4 V. The electric power being dissipated by the internal resistance of the battery is 34.0 W. Find the emf of the battery.

 

 

Using power we can find Rinternal from

 

 

 

 

 

Alternatively we could find the voltage dropped across the internal resistance and add that voltage to the terminal voltage and we would have the emf.

 

 

 

 

 

 

 

 

 

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This page last updated on June 18, 2018