A real battery has an emf \( \xi \) and an internal resistance \( r \). A variable resistor \( R... VIDEO
A real battery has an emf \( \xi \) and an internal resistance \( r \). A variable resistor \( R \) is connected across the terminals of the battery. A current \( i \) is drawn from the battery and the potential difference across the terminals of the battery is \( V \). If \( R \) is slowly decreased to zero, which of the following best describes \( i \) and \( V \) ?https://bit.ly/YTAI_PWAP https://www.pw.live
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