Doctor Oreo
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### Questions (4)

 3 Where does the equation $E_q = \frac{kq}{r^2}$ come from in this problem? 2 Finding current using EMF & internal resistance 1 Determining Water Level 0 Finding the charge density

### Reputation (137)

 +15 Where does the equation $E_q = \frac{kq}{r^2}$ come from in this problem? +10 Finding current using EMF & internal resistance +5 Determining Water Level

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### Tags (9)

 0 homework-and-exercises × 3 0 pressure 0 electromagnetism × 2 0 resistance 0 current 0 voltage 0 electric-circuits 0 water 0 electric-fields

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