深夜亚洲福利久久

15.7 Potential difference

  

from NDT Educational Resources is an interactive exercise showing how Ohm's law can be applied to determine the current in a circuit as the resistance in the circuit is changed.

Paul Falstad's applet  provides a good explanation of the basic concept underlying a voltage divider. 

Understanding Physics

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Mansfield and O'Sullivan, Understanding Physics, 3rd ed., John Wiley & Sons, Chichester (2020),

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