P28_042 - 42. (a) In the rst case i = = = E E = Req RA + R0...

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42. (a) In the frst case i 0 = E R eq = E R A + R 0 + R V R/ ( R + R V ) = 12 . 0V 3 . 00 Ω + 100 Ω + (300 Ω)(85 . 0Ω) / (300 Ω + 85 . =7 . 09 × 10 2 A , and V = E− i 0 ( R A + R 0 )=12 . (0 . 0709 A)(103 . 00 Ω) = 4 . 70 V. In the second case V = E R 0 / ( R 0 + R 0 ), where R 0 = R V ( R + R A ) R V + R + R A = (300 Ω)(300 Ω + 85 . 300 Ω + 85 . 0Ω+3 . 00 Ω =68 . 0Ω . So V =(12 . 0 V)(68 . / (68 . 0 Ω+100 Ω) = 4 . 86 V, and i 0 = V ( R + R A )=4 . 86 V / (300 Ω+85
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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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