Rint=? I un M R3 3R₂ M
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Recall that a real battery can be modeled as an ideal emf source connected in series to an 'internal' resistor. The circuit below contains such a real battery and three ohmic resistors.
All labeled quantities except the internal resistance Rint are known.
Known quantities: E, I, R1, R2, R3
What is the internal resistance of the battery, Rint? Your answer will be in terms of the known quantities. Show all work. (Hint: Equivalent resistance can help.)
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