P28_030 - 2 E i R r i R r i R R = 0, or i R = 2 E / (2 r +...

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30. (a) By symmetry, when the two batteries are connected in parallel the current i going through either one is the same. So from E = ir +(2 i ) R we get i R =2 i =2 E / ( r +2 R ). When connected in series
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Unformatted text preview: 2 E i R r i R r i R R = 0, or i R = 2 E / (2 r + R ). (b) In series, since R > r . (c) In parallel, since R < r ....
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

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