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Sagot :

Bonjour,

1)

a) U(AD) = U(CD) + U(BC) + U(AB)

b) U(AD) = 4 + 3 + 2 = 9 V

2)

a) U(ED) = U(AD) + U(AE)

b) U(ED) = 9 + 3 = 12 V

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